C++程序
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/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*/
/*
* doio - a general purpose io initiator with system call and
* write logging. See doio.h for the structure which defines
* what doio requests should look like.
*
* Currently doio can handle read,write,reada,writea,ssread,
* sswrite, and many varieties of listio requests.
* For disk io, if the O_SSD flag is set doio will allocate
* the appropriate amount of ssd and do the transfer - thus, doio
* can handle all of the primitive types of file io.
*
* programming
* notes:
* -----------
* messages should generally be printed using doio_fprintf().
*
*/
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <time.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#ifdef CRAY
#include <sys/iosw.h>
#endif
#ifdef sgi
#include <aio.h> /* for aio_read,write */
#include <inttypes.h> /* for uint64_t type */
#include <siginfo.h> /* signal handlers & SA_SIGINFO */
#endif
#ifndef CRAY
#include <sys/uio.h> /* for struct iovec (readv) */
#include <sys/mman.h> /* for mmap(2) */
#include <sys/ipc.h> /* for i/o buffer in shared memory */
#include <sys/shm.h> /* for i/o buffer in shared memory */
#endif
#include <sys/wait.h>
#ifdef CRAY
#include <sys/listio.h>
#include <sys/panic.h>
#endif
#include <sys/time.h> /* for delays */
#include "doio.h"
#include "write_log.h"
#include "random_range.h"
#include "string_to_tokens.h"
#include "pattern.h"
#define NMEMALLOC 32
#define MEM_DATA 1 /* data space */
#define MEM_SHMEM 2 /* System V shared memory */
#define MEM_T3ESHMEM 3 /* T3E Shared Memory */
#define MEM_MMAP 4 /* mmap(2) */
#define MEMF_PRIVATE 0001
#define MEMF_AUTORESRV 0002
#define MEMF_LOCAL 0004
#define MEMF_SHARED 0010
#define MEMF_FIXADDR 0100
#define MEMF_ADDR 0200
#define MEMF_AUTOGROW 0400
#define MEMF_FILE 01000 /* regular file -- unlink on close */
#define MEMF_MPIN 010000 /* use mpin(2) to lock pages in memory */
struct memalloc {
int memtype;
int flags;
int nblks;
char *name;
void *space; /* memory address of allocated space */
int fd; /* FD open for mmaping */
int size;
} Memalloc[NMEMALLOC];
/*
* Structure for maintaining open file test descriptors. Used by
* alloc_fd().
*/
struct fd_cache {
char c_file[MAX_FNAME_LENGTH + 1];
int c_oflags;
int c_fd;
long c_rtc;
#ifdef sgi
int c_memalign; /* from F_DIOINFO */
int c_miniosz;
int c_maxiosz;
#endif
#ifndef CRAY
void *c_memaddr; /* mmapped address */
int c_memlen; /* length of above region */
#endif
};
/*
* Name-To-Value map
* Used to map cmdline arguments to values
*/
struct smap {
char *string;
int value;
};
struct aio_info {
int busy;
int id;
int fd;
int strategy;
volatile int done;
#ifdef CRAY
struct iosw iosw;
#endif
#ifdef sgi
aiocb_t aiocb;
int aio_ret; /* from aio_return */
int aio_errno; /* from aio_error */
#endif
int sig;
int signalled;
struct sigaction osa;
};
/* ---------------------------------------------------------------------------
*
* A new paradigm of doing the r/w system call where there is a "stub"
* function that builds the info for the system call, then does the system
* call; this is called by code that is common to all system calls and does
* the syscall return checking, async I/O wait, iosw check, etc.
*
* Flags:
* WRITE, ASYNC, SSD/SDS,
* FILE_LOCK, WRITE_LOG, VERIFY_DATA,
*/
struct status {
int rval; /* syscall return */
int err; /* errno */
int *aioid; /* list of async I/O structures */
};
struct syscall_info {
char *sy_name;
int sy_type;
struct status *(*sy_syscall) ();
int (*sy_buffer) ();
char *(*sy_format) ();
int sy_flags;
int sy_bits;
};
#define SY_WRITE 00001
#define SY_ASYNC 00010
#define SY_IOSW 00020
#define SY_SDS 00100
#ifndef O_SSD
#define O_SSD 0 /* so code compiles on a CRAY2 */
#endif
#ifdef sgi
#define UINT64_T uint64_t
#else
#define UINT64_T unsigned long
#endif
#ifndef O_PARALLEL
#define O_PARALLEL 0 /* so O_PARALLEL may be used in expressions */
#endif
#define PPID_CHECK_INTERVAL 5 /* check ppid every <-- iterations */
#define MAX_AIO 256 /* maximum number of async I/O ops */
#ifdef _CRAYMPP
#define MPP_BUMP 16 /* page un-alignment for MPP */
#else
#define MPP_BUMP 0
#endif
#define SYSERR strerror(errno)
/*
* getopt() string of supported cmdline arguments.
*/
#define OPTS "aC:d:ehm:n:kr:w:vU:V:M:N:"
#define DEF_RELEASE_INTERVAL 0
/*
* Flags set in parse_cmdline() to indicate which options were selected
* on the cmdline.
*/
int a_opt = 0; /* abort on data compare errors */
int e_opt = 0; /* exec() after fork()'ing */
int C_opt = 0; /* Data Check Type */
int d_opt = 0; /* delay between operations */
int k_opt = 0; /* lock file regions during writes */
int m_opt = 0; /* generate periodic messages */
int n_opt = 0; /* nprocs */
int r_opt = 0; /* resource release interval */
int w_opt = 0; /* file write log file */
int v_opt = 0; /* verify writes if set */
int U_opt = 0; /* upanic() on varios conditions */
int V_opt = 0; /* over-ride default validation fd type */
int M_opt = 0; /* data buffer allocation types */
char TagName[40]; /* name of this doio (see Monster) */
/*
* Misc globals initialized in parse_cmdline()
*/
char *Prog = NULL; /* set up in parse_cmdline() */
int Upanic_Conditions; /* set by args to -U */
int Release_Interval; /* arg to -r */
int Nprocs; /* arg to -n */
char *Write_Log; /* arg to -w */
char *Infile; /* input file (defaults to stdin) */
int *Children; /* pids of child procs */
int Nchildren = 0;
int Nsiblings = 0; /* tfork'ed siblings */
int Execd = 0;
int Message_Interval = 0;
int Npes = 0; /* non-zero if built as an mpp multi-pe app */
int Vpe = -1; /* Virtual pe number if Npes >= 0 */
int Reqno = 1; /* request # - used in some error messages */
int Reqskipcnt = 0; /* count of I/O requests that are skipped */
int Validation_Flags;
char *(*Data_Check) (); /* function to call for data checking */
int (*Data_Fill) (); /* function to call for data filling */
int Nmemalloc = 0; /* number of memory allocation strategies */
int delayop = 0; /* delay between operations - type of delay */
int delaytime = 0; /* delay between operations - how long */
struct wlog_file Wlog;
int active_mmap_rw = 0; /* Indicates that mmapped I/O is occurring. */
/* Used by sigbus_action() in the child doio. */
int havesigint = 0;
#define SKIP_REQ -2 /* skip I/O request */
/*
* Global file descriptors
*/
int Wfd_Append; /* for appending to the write-log */
int Wfd_Random; /* for overlaying write-log entries */
#define FD_ALLOC_INCR 32 /* allocate this many fd_map structs */
/* at a time */
/*
* Globals for tracking Sds and Core usage
*/
char *Memptr; /* ptr to core buffer space */
int Memsize; /* # bytes pointed to by Memptr */
/* maintained by alloc_mem() */
int Sdsptr; /* sds offset (always 0) */
int Sdssize; /* # bytes of allocated sds space */
/* Maintained by alloc_sds() */
char Host[16];
char Pattern[128];
int Pattern_Length;
/*
* Signal handlers, and related globals
*/
char *syserrno(int err);
void doio(void);
void doio_delay(void);
char *format_oflags(int oflags);
char *format_strat(int strategy);
char *format_rw(struct io_req *ioreq, int fd, void *buffer,
int signo, char *pattern, void *iosw);
#ifdef CRAY
char *format_sds(struct io_req *ioreq, void *buffer, int sds char *pattern);
#endif /* CRAY */
int do_read(struct io_req *req);
int do_write(struct io_req *req);
int lock_file_region(char *fname, int fd, int type, int start, int nbytes);
#ifdef CRAY
char *format_listio(struct io_req *ioreq, int lcmd,
struct listreq *list, int nent, int fd, char *pattern);
#endif /* CRAY */
int do_listio(struct io_req *req);
#if defined(_CRAY1) || defined(CRAY)
int do_ssdio(struct io_req *req);
#endif /* defined(_CRAY1) || defined(CRAY) */
char *fmt_ioreq(struct io_req *ioreq, struct syscall_info *sy, int fd);
#ifdef CRAY
struct status *sy_listio(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
int listio_mem(struct io_req *req, int offset, int fmstride,
int *min, int *max);
char *fmt_listio(struct io_req *req, struct syscall_info *sy,
int fd, char *addr);
#endif /* CRAY */
#ifdef sgi
struct status *sy_pread(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
struct status *sy_pwrite(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
char *fmt_pread(struct io_req *req, struct syscall_info *sy,
int fd, char *addr);
#endif /* sgi */
#ifndef CRAY
struct status *sy_readv(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
struct status *sy_writev(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
struct status *sy_rwv(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr, int rw);
char *fmt_readv(struct io_req *req, struct syscall_info *sy,
int fd, char *addr);
#endif /* !CRAY */
#ifdef sgi
struct status *sy_aread(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
struct status *sy_awrite(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr)
struct status *sy_arw(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr, int rw);
char *fmt_aread(struct io_req *req, struct syscall_info *sy,
int fd, char *addr);
#endif /* sgi */
#ifndef CRAY
struct status *sy_mmread(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
struct status *sy_mmwrite(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr);
struct status *sy_mmrw(struct io_req *req, struct syscall_info *sysc,
int fd, char *addr, int rw);
char *fmt_mmrw(struct io_req *req, struct syscall_info *sy, int fd, char *addr);
#endif /* !CRAY */
int do_rw(struct io_req *req);
#ifdef sgi
int do_fcntl(struct io_req *req);
#endif /* sgi */
#ifndef CRAY
int do_sync(struct io_req *req);
#endif /* !CRAY */
int doio_pat_fill(char *addr, int mem_needed, char *Pattern,
int Pattern_Length, int shift);
char *doio_pat_check(char *buf, int offset, int length,
char *pattern, int pattern_length, int patshift);
char *check_file(char *file, int offset, int length, char *pattern,
int pattern_length, int patshift, int fsa);
int doio_fprintf(FILE * stream, char *format, ...);
int alloc_mem(int nbytes);
#if defined(_CRAY1) || defined(CRAY)
int alloc_sds(int nbytes);
#endif /* defined(_CRAY1) || defined(CRAY) */
int alloc_fd(char *file, int oflags);
struct fd_cache *alloc_fdcache(char *file, int oflags);
#ifdef sgi
void signal_info(int sig, siginfo_t * info, void *v);
void cleanup_handler(int sig, siginfo_t * info, void *v);
void die_handler(int sig, siginfo_t * info, void *v);
void sigbus_handler(int sig, siginfo_t * info, void *v);
#else /* !sgi */
void cleanup_handler(int sig);
void die_handler(int sig);
#ifndef CRAY
void sigbus_handler(int sig);
#endif /* !CRAY */
#endif /* sgi */
void noop_handler(int sig);
void sigint_handler(int sig);
void aio_handler(int sig);
void dump_aio(void);
#ifdef sgi
void cb_handler(sigval_t val);
#endif /* sgi */
struct aio_info *aio_slot(int aio_id);
int aio_register(int fd, int strategy, int sig);
int aio_unregister(int aio_id);
#ifndef __linux__
int aio_wait(int aio_id);
#endif /* !__linux__ */
char *hms(time_t t);
int aio_done(struct aio_info *ainfo);
void doio_upanic(int mask);
int parse_cmdline(int argc, char **argv, char *opts);
#ifndef CRAY
void parse_memalloc(char *arg);
void dump_memalloc(void);
#endif /* !CRAY */
void parse_delay(char *arg);
int usage(FILE * stream);
void help(FILE * stream);
/*
* Upanic conditions, and a map from symbolics to values
*/
#define U_CORRUPTION 0001 /* upanic on data corruption */
#define U_IOSW 0002 /* upanic on bad iosw */
#define U_RVAL 0004 /* upanic on bad rval */
#define U_ALL (U_CORRUPTION | U_IOSW | U_RVAL)
struct smap Upanic_Args[] = {
{"corruption", U_CORRUPTION},
{"iosw", U_IOSW},
{"rval", U_RVAL},
{"all", U_ALL},
{NULL, 0}
};
struct aio_info Aio_Info[MAX_AIO];
/* -C data-fill/check type */
#define C_DEFAULT 1
struct smap checkmap[] = {
{"default", C_DEFAULT},
{NULL, 0},
};
/* -d option delay types */
#define DELAY_SELECT 1
#define DELAY_SLEEP 2
#define DELAY_SGINAP 3
#define DELAY_ALARM 4
#define DELAY_ITIMER 5 /* POSIX timer */
struct smap delaymap[] = {
{"select", DELAY_SELECT},
{"sleep", DELAY_SLEEP},
#ifdef sgi
{"sginap", DELAY_SGINAP},
#endif
{"alarm", DELAY_ALARM},
{NULL, 0},
};
/******
*
* strerror() does similar actions.
char *
syserrno(int err)
{
static char sys_errno[10];
sprintf(sys_errno, "%d", errno);
return(sys_errno);
}
******/
int main(int argc, char **argv)
{
int i, pid, stat, ex_stat;
#ifdef CRAY
sigset_t omask;
#elif defined(linux)
sigset_t omask, block_mask;
#else
int omask;
#endif
struct sigaction sa;
umask(0); /* force new file modes to known values */
#if _CRAYMPP
Npes = sysconf(_SC_CRAY_NPES); /* must do this before parse_cmdline */
Vpe = sysconf(_SC_CRAY_VPE);
#endif
TagName[0] = '\0';
parse_cmdline(argc, argv, OPTS);
random_range_seed(getpid()); /* initialize random number generator */
/*
* If this is a re-exec of doio, jump directly into the doio function.
*/
if (Execd) {
doio();
exit(E_SETUP);
}
/*
* Stop on all but a few signals...
*/
sigemptyset(&sa.sa_mask);
sa.sa_handler = sigint_handler;
sa.sa_flags = SA_RESETHAND; /* sigint is ignored after the */
/* first time */
for (i = 1; i <= NSIG; i++) {
switch (i) {
#ifdef SIGRECOVERY
case SIGRECOVERY:
break;
#endif
#ifdef SIGCKPT
case SIGCKPT:
#endif
#ifdef SIGRESTART
case SIGRESTART:
#endif
case SIGTSTP:
case SIGSTOP:
case SIGCONT:
case SIGCHLD:
case SIGBUS:
case SIGSEGV:
case SIGQUIT:
break;
default:
sigaction(i, &sa, NULL);
}
}
/*
* If we're logging write operations, make a dummy call to wlog_open
* to initialize the write history file. This call must be done in
* the parent, to ensure that the history file exists and/or has
* been truncated before any children attempt to open it, as the doio
* children are not allowed to truncate the file.
*/
if (w_opt) {
strcpy(Wlog.w_file, Write_Log);
if (wlog_open(&Wlog, 1, 0666) < 0) {
doio_fprintf(stderr,
"Could not create/truncate write log %s\n",
Write_Log);
exit(2);
}
wlog_close(&Wlog);
}
/*
* Malloc space for the children pid array. Initialize all entries
* to -1.
*/
Children = malloc(sizeof(int) * Nprocs);
for (i = 0; i < Nprocs; i++) {
Children[i] = -1;
}
sigemptyset(&block_mask);
sigaddset(&block_mask, SIGCHLD);
sigprocmask(SIG_BLOCK, &block_mask, &omask);
/*
* Fork Nprocs. This [parent] process is a watchdog, to notify the
* invoker of procs which exit abnormally, and to make sure that all
* child procs get cleaned up. If the -e option was used, we will also
* re-exec. This is mostly for unicos/mk on mpp's, to ensure that not
* all of the doio's don't end up in the same pe.
*
* Note - if Nprocs is 1, or this doio is a multi-pe app (Npes > 1),
* jump directly to doio(). multi-pe apps can't fork(), and there is
* no reason to fork() for 1 proc.
*/
if (Nprocs == 1 || Npes > 1) {
doio();
exit(0);
} else {
for (i = 0; i < Nprocs; i++) {
if ((pid = fork()) == -1) {
doio_fprintf(stderr,
"(parent) Could not fork %d children: %s (%d)\n",
i + 1, SYSERR, errno);
exit(E_SETUP);
}
Children[Nchildren] = pid;
Nchildren++;
if (pid == 0) {
if (e_opt) {
char *exec_path;
exec_path = argv[0];
argv[0] = malloc(strlen(exec_path) + 2);
sprintf(argv[0], "-%s", exec_path);
execvp(exec_path, argv);
doio_fprintf(stderr,
"(parent) Could not execvp %s: %s (%d)\n",
exec_path, SYSERR, errno);
exit(E_SETUP);
} else {
doio();
exit(E_SETUP);
}
}
}
/*
* Parent spins on wait(), until all children exit.
*/
ex_stat = E_NORMAL;
while (Nprocs) {
if ((pid = wait(&stat)) == -1) {
if (errno == EINTR)
continue;
}
for (i = 0; i < Nchildren; i++)
if (Children[i] == pid)
Children[i] = -1;
Nprocs--;
if (WIFEXITED(stat)) {
switch (WEXITSTATUS(stat)) {
case E_NORMAL:
/* noop */
break;
case E_INTERNAL:
doio_fprintf(stderr,
"(parent) pid %d exited because of an internal error\n",
pid);
ex_stat |= E_INTERNAL;
break;
case E_SETUP:
doio_fprintf(stderr,
"(parent) pid %d exited because of a setup error\n",
pid);
ex_stat |= E_SETUP;
break;
case E_COMPARE:
doio_fprintf(stderr,
"(parent) pid %d exited because of data compare errors\n",
pid);
ex_stat |= E_COMPARE;
if (a_opt)
kill(0, SIGINT);
break;
case E_USAGE:
doio_fprintf(stderr,
"(parent) pid %d exited because of a usage error\n",
pid);
ex_stat |= E_USAGE;
break;
default:
doio_fprintf(stderr,
"(parent) pid %d exited with unknown status %d\n",
pid, WEXITSTATUS(stat));
ex_stat |= E_INTERNAL;
break;
}
} else if (WIFSIGNALED(stat)
&& WTERMSIG(stat) != SIGINT) {
doio_fprintf(stderr,
"(parent) pid %d terminated by signal %d\n",
pid, WTERMSIG(stat));
ex_stat |= E_SIGNAL;
}
fflush(NULL);
}
}
exit(ex_stat);
} /* main */
/*
* main doio function. Each doio child starts here, and never returns.
*/
void doio(void)
{
int rval, i, infd, nbytes;
char *cp;
struct io_req ioreq;
struct sigaction sa, def_action, ignore_action, exit_action;
#ifndef CRAY
struct sigaction sigbus_action;
#endif
Memsize = Sdssize = 0;
/*
* Initialize the Pattern - write-type syscalls will replace Pattern[1]
* with the pattern passed in the request. Make sure that
* strlen(Pattern) is not mod 16 so that out of order words will be
* detected.
*/
gethostname(Host, sizeof(Host));
if ((cp = strchr(Host, '.')) != NULL)
*cp = '\0';
Pattern_Length = sprintf(Pattern, "-:%d:%s:%s*", getpid(), Host, Prog);
if (!(Pattern_Length % 16)) {
Pattern_Length = sprintf(Pattern, "-:%d:%s:%s**",
getpid(), Host, Prog);
}
/*
* Open a couple of descriptors for the write-log file. One descriptor
* is for appending, one for random access. Write logging is done for
* file corruption detection. The program doio_check is capable of
* doing corruption detection based on a doio write-log.
*/
if (w_opt) {
strcpy(Wlog.w_file, Write_Log);
if (wlog_open(&Wlog, 0, 0666) == -1) {
doio_fprintf(stderr,
"Could not open write log file (%s): wlog_open() failed\n",
Write_Log);
exit(E_SETUP);
}
}
/*
* Open the input stream - either a file or stdin
*/
if (Infile == NULL) {
infd = 0;
} else {
if ((infd = open(Infile, O_RDWR)) == -1) {
doio_fprintf(stderr,
"Could not open input file (%s): %s (%d)\n",
Infile, SYSERR, errno);
exit(E_SETUP);
}
}
/*
* Define a set of signals that should never be masked. Receipt of
* these signals generally indicates a programming error, and we want
* a corefile at the point of error. We put SIGQUIT in this list so
* that ^\ will force a user core dump.
*
* Note: the handler for these should be SIG_DFL, all of them
* produce a corefile as the default action.
*/
ignore_action.sa_handler = SIG_IGN;
ignore_action.sa_flags = 0;
sigemptyset(&ignore_action.sa_mask);
def_action.sa_handler = SIG_DFL;
def_action.sa_flags = 0;
sigemptyset(&def_action.sa_mask);
#ifdef sgi
exit_action.sa_sigaction = cleanup_handler;
exit_action.sa_flags = SA_SIGINFO;
sigemptyset(&exit_action.sa_mask);
sa.sa_sigaction = die_handler;
sa.sa_flags = SA_SIGINFO;
sigemptyset(&sa.sa_mask);
sigbus_action.sa_sigaction = sigbus_handler;
sigbus_action.sa_flags = SA_SIGINFO;
sigemptyset(&sigbus_action.sa_mask);
#else
exit_action.sa_handler = cleanup_handler;
exit_action.sa_flags = 0;
sigemptyset(&exit_action.sa_mask);
sa.sa_handler = die_handler;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
#ifndef CRAY
sigbus_action.sa_handler = sigbus_handler;
sigbus_action.sa_flags = 0;
sigemptyset(&sigbus_action.sa_mask);
#endif
#endif
for (i = 1; i <= NSIG; i++) {
switch (i) {
/* Signals to terminate program on */
case SIGINT:
sigaction(i, &exit_action, NULL);
break;
#ifndef CRAY
/* This depends on active_mmap_rw */
case SIGBUS:
sigaction(i, &sigbus_action, NULL);
break;
#endif
/* Signals to Ignore... */
case SIGSTOP:
case SIGCONT:
#ifdef SIGRECOVERY
case SIGRECOVERY:
#endif
sigaction(i, &ignore_action, NULL);
break;
/* Signals to trap & report & die */
/*case SIGTRAP: */
/*case SIGABRT: */
#ifdef SIGERR /* cray only signals */
case SIGERR:
case SIGBUFIO:
case SIGINFO:
#endif
/*case SIGFPE: */
case SIGURG:
case SIGHUP:
case SIGTERM:
case SIGPIPE:
case SIGIO:
case SIGUSR1:
case SIGUSR2:
sigaction(i, &sa, NULL);
break;
/* Default Action for all other signals */
default:
sigaction(i, &def_action, NULL);
break;
}
}
/*
* Main loop - each doio proc does this until the read returns eof (0).
* Call the appropriate io function based on the request type.
*/
while ((nbytes = read(infd, (char *)&ioreq, sizeof(ioreq)))) {
/*
* Periodically check our ppid. If it is 1, the child exits to
* help clean up in the case that the main doio process was
* killed.
*/
if (Reqno && ((Reqno % PPID_CHECK_INTERVAL) == 0)) {
if (getppid() == 1) {
doio_fprintf(stderr,
"Parent doio process has exited\n");
alloc_mem(-1);
exit(E_SETUP);
}
}
if (nbytes == -1) {
doio_fprintf(stderr,
"read of %d bytes from input failed: %s (%d)\n",
sizeof(ioreq), SYSERR, errno);
alloc_mem(-1);
exit(E_SETUP);
}
if (nbytes != sizeof(ioreq)) {
doio_fprintf(stderr,
"read wrong # bytes from input stream, expected %d, got %d\n",
sizeof(ioreq), nbytes);
alloc_mem(-1);
exit(E_SETUP);
}
if (ioreq.r_magic != DOIO_MAGIC) {
doio_fprintf(stderr,
"got a bad magic # from input stream. Expected 0%o, got 0%o\n",
DOIO_MAGIC, ioreq.r_magic);
alloc_mem(-1);
exit(E_SETUP);
}
/*
* If we're on a Release_Interval multiple, relase all ssd and
* core space, and close all fd's in Fd_Map[].
*/
if (Reqno && Release_Interval && !(Reqno % Release_Interval)) {
if (Memsize) {
#ifdef NOTDEF
sbrk(-1 * Memsize);
#else
alloc_mem(-1);
#endif
}
#ifdef _CRAY1
if (Sdssize) {
ssbreak(-1 * btoc(Sdssize));
Sdsptr = 0;
Sdssize = 0;
}
#endif /* _CRAY1 */
alloc_fd(NULL, 0);
}
switch (ioreq.r_type) {
case READ:
case READA:
rval = do_read(&ioreq);
break;
case WRITE:
case WRITEA:
rval = do_write(&ioreq);
break;
case READV:
case AREAD:
case PREAD:
case LREAD:
case LREADA:
case LSREAD:
case LSREADA:
case WRITEV:
case AWRITE:
case PWRITE:
case MMAPR:
case MMAPW:
case LWRITE:
case LWRITEA:
case LSWRITE:
case LSWRITEA:
case LEREAD:
case LEREADA:
case LEWRITE:
case LEWRITEA:
rval = do_rw(&ioreq);
break;
#ifdef CRAY
case SSREAD:
case SSWRITE:
rval = do_ssdio(&ioreq);
break;
case LISTIO:
rval = do_listio(&ioreq);
break;
#endif
#ifdef sgi
case RESVSP:
case UNRESVSP:
#ifdef F_FSYNC
case DFFSYNC:
#endif
rval = do_fcntl(&ioreq);
break;
#endif /* sgi */
#ifndef CRAY
case FSYNC2:
case FDATASYNC:
rval = do_sync(&ioreq);
break;
#endif
default:
doio_fprintf(stderr,
"Don't know how to handle io request type %d\n",
ioreq.r_type);
alloc_mem(-1);
exit(E_SETUP);
}
if (rval == SKIP_REQ) {
Reqskipcnt++;
} else if (rval != 0) {
alloc_mem(-1);
doio_fprintf(stderr,
"doio(): operation %d returned != 0\n",
ioreq.r_type);
exit(E_SETUP);
}
if (Message_Interval && Reqno % Message_Interval == 0) {
doio_fprintf(stderr,
"Info: %d requests done (%d skipped) by this process\n",
Reqno, Reqskipcnt);
}
Reqno++;
if (delayop != 0)
doio_delay();
}
/*
* Child exits normally
*/
alloc_mem(-1);
exit(E_NORMAL);
} /* doio */
void doio_delay(void)
{
struct timeval tv_delay;
struct sigaction sa_al, sa_old;
sigset_t al_mask;
switch (delayop) {
case DELAY_SELECT:
tv_delay.tv_sec = delaytime / 1000000;
tv_delay.tv_usec = delaytime % 1000000;
/*doio_fprintf(stdout, "delay_select: %d %d\n",
tv_delay.tv_sec, tv_delay.tv_usec); */
select(0, NULL, NULL, NULL, &tv_delay);
break;
case DELAY_SLEEP:
sleep(delaytime);
break;
#ifdef sgi
case DELAY_SGINAP:
sginap(delaytime);
break;
#endif
case DELAY_ALARM:
sa_al.sa_flags = 0;
sa_al.sa_handler = noop_handler;
sigemptyset(&sa_al.sa_mask);
sigaction(SIGALRM, &sa_al, &sa_old);
sigemptyset(&al_mask);
alarm(delaytime);
sigsuspend(&al_mask);
sigaction(SIGALRM, &sa_old, 0);
break;
}
}
/*
* Format IO requests, returning a pointer to the formatted text.
*
* format_strat - formats the async i/o completion strategy
* format_rw - formats a read[a]/write[a] request
* format_sds - formats a ssread/sswrite request
* format_listio- formats a listio request
*
* ioreq is the doio io request structure.
*/
struct smap sysnames[] = {
{"READ", READ},
{"WRITE", WRITE},
{"READA", READA},
{"WRITEA", WRITEA},
{"SSREAD", SSREAD},
{"SSWRITE", SSWRITE},
{"LISTIO", LISTIO},
{"LREAD", LREAD},
{"LREADA", LREADA},
{"LWRITE", LWRITE},
{"LWRITEA", LWRITEA},
{"LSREAD", LSREAD},
{"LSREADA", LSREADA},
{"LSWRITE", LSWRITE},
{"LSWRITEA", LSWRITEA},
/* Irix System Calls */
{"PREAD", PREAD},
{"PWRITE", PWRITE},
{"AREAD", AREAD},
{"AWRITE", AWRITE},
{"LLREAD", LLREAD},
{"LLAREAD", LLAREAD},
{"LLWRITE", LLWRITE},
{"LLAWRITE", LLAWRITE},
{"RESVSP", RESVSP},
{"UNRESVSP", UNRESVSP},
{"DFFSYNC", DFFSYNC},
/* Irix and Linux System Calls */
{"READV", READV},
{"WRITEV", WRITEV},
{"MMAPR", MMAPR},
{"MMAPW", MMAPW},
{"FSYNC2", FSYNC2},
{"FDATASYNC", FDATASYNC},
{"unknown", -1},
};
struct smap aionames[] = {
{"poll", A_POLL},
{"signal", A_SIGNAL},
{"recall", A_RECALL},
{"recalla", A_RECALLA},
{"recalls", A_RECALLS},
{"suspend", A_SUSPEND},
{"callback", A_CALLBACK},
{"synch", 0},
{"unknown", -1},
};
char *format_oflags(int oflags)
{
char flags[255];
flags[0] = '\0';
switch (oflags & 03) {
case O_RDONLY:
strcat(flags, "O_RDONLY,");
break;
case O_WRONLY:
strcat(flags, "O_WRONLY,");
break;
case O_RDWR:
strcat(flags, "O_RDWR,");
break;
default:
strcat(flags, "O_weird");
break;
}
if (oflags & O_EXCL)
strcat(flags, "O_EXCL,");
if (oflags & O_SYNC)
strcat(flags, "O_SYNC,");
#ifdef CRAY
if (oflags & O_RAW)
strcat(flags, "O_RAW,");
if (oflags & O_WELLFORMED)
strcat(flags, "O_WELLFORMED,");
#ifdef O_SSD
if (oflags & O_SSD)
strcat(flags, "O_SSD,");
#endif
if (oflags & O_LDRAW)
strcat(flags, "O_LDRAW,");
if (oflags & O_PARALLEL)
strcat(flags, "O_PARALLEL,");
if (oflags & O_BIG)
strcat(flags, "O_BIG,");
if (oflags & O_PLACE)
strcat(flags, "O_PLACE,");
if (oflags & O_ASYNC)
strcat(flags, "O_ASYNC,");
#endif
#ifdef sgi
if (oflags & O_DIRECT)
strcat(flags, "O_DIRECT,");
if (oflags & O_DSYNC)
strcat(flags, "O_DSYNC,");
if (oflags & O_RSYNC)
strcat(flags, "O_RSYNC,");
#endif
return (strdup(flags));
}
char *format_strat(int strategy)
{
char msg[64];
char *aio_strat;
switch (strategy) {
case A_POLL:
aio_strat = "POLL";
break;
case A_SIGNAL:
aio_strat = "SIGNAL";
break;
case A_RECALL:
aio_strat = "RECALL";
break;
case A_RECALLA:
aio_strat = "RECALLA";
break;
case A_RECALLS:
aio_strat = "RECALLS";
break;
case A_SUSPEND:
aio_strat = "SUSPEND";
break;
case A_CALLBACK:
aio_strat = "CALLBACK";
break;
case 0:
aio_strat = "<zero>";
break;
default:
sprintf(msg, "<error:%#o>", strategy);
aio_strat = strdup(msg);
break;
}
return (aio_strat);
}
char *format_rw(struct io_req *ioreq, int fd, void *buffer, int signo,
char *pattern, void *iosw)
{
static char *errbuf = NULL;
char *aio_strat, *cp;
struct read_req *readp = &ioreq->r_data.read;
struct write_req *writep = &ioreq->r_data.write;
struct read_req *readap = &ioreq->r_data.read;
struct write_req *writeap = &ioreq->r_data.write;
if (errbuf == NULL)
errbuf = malloc(32768);
cp = errbuf;
cp += sprintf(cp, "Request number %d\n", Reqno);
switch (ioreq->r_type) {
case READ:
cp += sprintf(cp, "syscall: read(%d, %#lo, %d)\n",
fd, (unsigned long)buffer, readp->r_nbytes);
cp +=
sprintf(cp,
" fd %d is file %s - open flags are %#o\n",
fd, readp->r_file, readp->r_oflags);
cp +=
sprintf(cp, " read done at file offset %d\n",
readp->r_offset);
break;
case WRITE:
cp += sprintf(cp, "syscall: write(%d, %#lo, %d)\n",
fd, (unsigned long)buffer, writep->r_nbytes);
cp +=
sprintf(cp,
" fd %d is file %s - open flags are %#o\n",
fd, writep->r_file, writep->r_oflags);
cp +=
sprintf(cp,
" write done at file offset %d - pattern is %s\n",
writep->r_offset, pattern);
break;
case READA:
aio_strat = format_strat(readap->r_aio_strat);
cp += sprintf(cp, "syscall: reada(%d, %#lo, %d, %#lo, %d)\n",
fd, (unsigned long)buffer, readap->r_nbytes,
(unsigned long)iosw, signo);
cp +=
sprintf(cp,
" fd %d is file %s - open flags are %#o\n",
fd, readap->r_file, readp->r_oflags);
cp +=
sprintf(cp, " reada done at file offset %d\n",
readap->r_offset);
cp +=
sprintf(cp,
" async io completion strategy is %s\n",
aio_strat);
break;
case WRITEA:
aio_strat = format_strat(writeap->r_aio_strat);
cp += sprintf(cp, "syscall: writea(%d, %#lo, %d, %#lo, %d)\n",
fd, (unsigned long)buffer, writeap->r_nbytes,
(unsigned long)iosw, signo);
cp +=
sprintf(cp,
" fd %d is file %s - open flags are %#o\n",
fd, writeap->r_file, writeap->r_oflags);
cp +=
sprintf(cp,
" writea done at file offset %d - pattern is %s\n",
writeap->r_offset, pattern);
cp +=
sprintf(cp,
" async io completion strategy is %s\n",
aio_strat);
break;
}
return errbuf;
}
#ifdef CRAY
char *format_sds(struct io_req *ioreq, void *buffer, int sds, char *pattern)
{
int i;
static char *errbuf = NULL;
char *cp;
struct ssread_req *ssreadp = &ioreq->r_data.ssread;
struct sswrite_req *sswritep = &ioreq->r_data.sswrite;
if (errbuf == NULL)
errbuf = malloc(32768);
cp = errbuf;
cp += sprintf(cp, "Request number %d\n", Reqno);
switch (ioreq->r_type) {
case SSREAD:
cp += sprintf(cp, "syscall: ssread(%#o, %#o, %d)\n",
buffer, sds, ssreadp->r_nbytes);
break;
case SSWRITE:
cp +=
sprintf(cp,
"syscall: sswrite(%#o, %#o, %d) - pattern was %s\n",
buffer, sds, sswritep->r_nbytes, pattern);
break;
}
return errbuf;
}
#endif /* CRAY */
/*
* Perform the various sorts of disk reads
*/
int do_read(struct io_req *req)
{
int fd, offset, nbytes, oflags, rval;
char *addr, *file;
#ifdef CRAY
struct aio_info *aiop;
int aio_id, aio_strat, signo;
#endif
#ifdef sgi
struct fd_cache *fdc;
#endif
/*
* Initialize common fields - assumes r_oflags, r_file, r_offset, and
* r_nbytes are at the same offset in the read_req and reada_req
* structures.
*/
file = req->r_data.read.r_file;
oflags = req->r_data.read.r_oflags;
offset = req->r_data.read.r_offset;
nbytes = req->r_data.read.r_nbytes;
/*printf("read: %s, %#o, %d %d\n", file, oflags, offset, nbytes); */
/*
* Grab an open file descriptor
* Note: must be done before memory allocation so that the direct i/o
* information is available in mem. allocate
*/
if ((fd = alloc_fd(file, oflags)) == -1)
return -1;
/*
* Allocate core or sds - based on the O_SSD flag
*/
#ifndef wtob
#define wtob(x) (x * sizeof(UINT64_T))
#endif
#ifdef CRAY
if (oflags & O_SSD) {
if (alloc_sds(nbytes) == -1)
return -1;
addr = (char *)Sdsptr;
} else {
if ((rval =
alloc_mem(nbytes + wtob(1) * 2 +
MPP_BUMP * sizeof(UINT64_T))) < 0) {
return rval;
}
addr = Memptr;
/*
* if io is not raw, bump the offset by a random amount
* to generate non-word-aligned io.
*/
if (!(req->r_data.read.r_uflags & F_WORD_ALIGNED)) {
addr += random_range(0, wtob(1) - 1, 1, NULL);
}
}
#else
#ifdef sgi
/* get memory alignment for using DIRECT I/O */
fdc = alloc_fdcache(file, oflags);
if ((rval = alloc_mem(nbytes + wtob(1) * 2 + fdc->c_memalign)) < 0) {
return rval;
}
addr = Memptr;
if ((req->r_data.read.r_uflags & F_WORD_ALIGNED)) {
/*
* Force memory alignment for Direct I/O
*/
if ((oflags & O_DIRECT) && ((long)addr % fdc->c_memalign != 0)) {
addr +=
fdc->c_memalign - ((long)addr % fdc->c_memalign);
}
} else {
addr += random_range(0, wtob(1) - 1, 1, NULL);
}
#else
/* what is !CRAY && !sgi ? */
if ((rval = alloc_mem(nbytes + wtob(1) * 2)) < 0) {
return rval;
}
addr = Memptr;
#endif /* !CRAY && sgi */
#endif /* CRAY */
switch (req->r_type) {
case READ:
/* move to the desired file position. */
if (lseek(fd, offset, SEEK_SET) == -1) {
doio_fprintf(stderr,
"lseek(%d, %d, SEEK_SET) failed: %s (%d)\n",
fd, offset, SYSERR, errno);
return -1;
}
if ((rval = read(fd, addr, nbytes)) == -1) {
doio_fprintf(stderr,
"read() request failed: %s (%d)\n%s\n",
SYSERR, errno,
format_rw(req, fd, addr, -1, NULL, NULL));
doio_upanic(U_RVAL);
return -1;
} else if (rval != nbytes) {
doio_fprintf(stderr,
"read() request returned wrong # of bytes - expected %d, got %d\n%s\n",
nbytes, rval,
format_rw(req, fd, addr, -1, NULL, NULL));
doio_upanic(U_RVAL);
return -1;
}
break;
#ifdef CRAY
case READA:
/*
* Async read
*/
/* move to the desired file position. */
if (lseek(fd, offset, SEEK_SET) == -1) {
doio_fprintf(stderr,
"lseek(%d, %d, SEEK_SET) failed: %s (%d)\n",
fd, offset, SYSERR, errno);
return -1;
}
aio_strat = req->r_data.read.r_aio_strat;
signo = (aio_strat == A_SIGNAL) ? SIGUSR1 : 0;
aio_id = aio_register(fd, aio_strat, signo);
aiop = aio_slot(aio_id);
if (reada(fd, addr, nbytes, &aiop->iosw, signo) == -1) {
doio_fprintf(stderr, "reada() failed: %s (%d)\n%s\n",
SYSERR, errno,
format_rw(req, fd, addr, signo, NULL,
&aiop->iosw));
aio_unregister(aio_id);
doio_upanic(U_RVAL);
rval = -1;
} else {
/*
* Wait for io to complete
*/
aio_wait(aio_id);
/*
* make sure the io completed without error
*/
if (aiop->iosw.sw_count != nbytes) {
doio_fprintf(stderr,
"Bad iosw from reada()\nExpected (%d,%d,%d), got (%d,%d,%d)\n%s\n",
1, 0, nbytes,
aiop->iosw.sw_flag,
aiop->iosw.sw_error,
aiop->iosw.sw_count,
format_rw(req, fd, addr, signo,
NULL, &aiop->iosw));
aio_unregister(aio_id);
doio_upanic(U_IOSW);
rval = -1;
} else {
aio_unregister(aio_id);
rval = 0;
}
}
if (rval == -1)
return rval;
break;
#endif /* CRAY */
}
return 0; /* if we get here, everything went ok */
}
/*
* Perform the verious types of disk writes.
*/
int do_write(struct io_req *req)
{
static int pid = -1;
int fd, nbytes, oflags, signo;
int logged_write, rval, got_lock;
off_t offset, woffset;
char *addr, pattern, *file, *msg;
struct wlog_rec wrec;
#ifdef CRAY
int aio_strat, aio_id;
struct aio_info *aiop;
#endif
#ifdef sgi
struct fd_cache *fdc;
#endif
woffset = 0;
/*
* Misc variable setup
*/
signo = 0;
nbytes = req->r_data.write.r_nbytes;
offset = req->r_data.write.r_offset;
pattern = req->r_data.write.r_pattern;
file = req->r_data.write.r_file;
oflags = req->r_data.write.r_oflags;
/*printf("pwrite: %s, %#o, %d %d\n", file, oflags, offset, nbytes); */
/*
* Allocate core memory and possibly sds space. Initialize the data
* to be written.
*/
Pattern[0] = pattern;
/*
* Get a descriptor to do the io on
*/
if ((fd = alloc_fd(file, oflags)) == -1)
return -1;
/*printf("write: %d, %s, %#o, %d %d\n",
fd, file, oflags, offset, nbytes); */
/*
* Allocate SDS space for backdoor write if desired
*/
#ifdef CRAY
if (oflags & O_SSD) {
#ifndef _CRAYMPP
if ((rval = alloc_mem(nbytes + wtob(1))) < 0) {
return rval;
}
(*Data_Fill) (Memptr, nbytes, Pattern, Pattern_Length, 0);
/*pattern_fill(Memptr, nbytes, Pattern, Pattern_Length, 0); */
if (alloc_sds(nbytes) == -1)
return -1;
if (sswrite((long)Memptr, Sdsptr, btoc(nbytes)) == -1) {
doio_fprintf(stderr,
"sswrite(%d, %d, %d) failed: %s (%d)\n",
(long)Memptr, Sdsptr, btoc(nbytes), SYSERR,
errno);
fflush(stderr);
return -1;
}
addr = (char *)Sdsptr;
#else
doio_fprintf(stderr,
"Invalid O_SSD flag was generated for MPP system\n");
fflush(stderr);
return -1;
#endif /* !CRAYMPP */
} else {
if ((rval = alloc_mem(nbytes + wtob(1)) < 0)) {
return rval;
}
addr = Memptr;
/*
* if io is not raw, bump the offset by a random amount
* to generate non-word-aligned io.
*/
if (!(req->r_data.write.r_uflags & F_WORD_ALIGNED)) {
addr += random_range(0, wtob(1) - 1, 1, NULL);
}
(*Data_Fill) (Memptr, nbytes, Pattern, Pattern_Length, 0);
if (addr != Memptr)
memmove(addr, Memptr, nbytes);
}
#else /* CRAY */
#ifdef sgi
/* get memory alignment for using DIRECT I/O */
fdc = alloc_fdcache(file, oflags);
if ((rval = alloc_mem(nbytes + wtob(1) * 2 + fdc->c_memalign)) < 0) {
return rval;
}
addr = Memptr;
if ((req->r_data.write.r_uflags & F_WORD_ALIGNED)) {
/*
* Force memory alignment for Direct I/O
*/
if ((oflags & O_DIRECT) && ((long)addr % fdc->c_memalign != 0)) {
addr +=
fdc->c_memalign - ((long)addr % fdc->c_memalign);
}
} else {
addr += random_range(0, wtob(1) - 1, 1, NULL);
}
(*Data_Fill) (Memptr, nbytes, Pattern, Pattern_Length, 0);
if (addr != Memptr)
memmove(addr, Memptr, nbytes);
#else /* sgi */
if ((rval = alloc_mem(nbytes + wtob(1) * 2)) < 0) {
return rval;
}
addr = Memptr;
(*Data_Fill) (Memptr, nbytes, Pattern, Pattern_Length, 0);
if (addr != Memptr)
memmove(addr, Memptr, nbytes);
#endif /* sgi */
#endif /* CRAY */
rval = -1;
got_lock = 0;
logged_write = 0;
if (k_opt) {
if (lock_file_region(file, fd, F_WRLCK, offset, nbytes) < 0) {
alloc_mem(-1);
exit(E_INTERNAL);
}
got_lock = 1;
}
/*
* Write a preliminary write-log entry. This is done so that
* doio_check can do corruption detection across an interrupt/crash.
* Note that w_done is set to 0. If doio_check sees this, it
* re-creates the file extents as if the write completed, but does not
* do any checking - see comments in doio_check for more details.
*/
if (w_opt) {
if (pid == -1) {
pid = getpid();
}
wrec.w_async = (req->r_type == WRITEA) ? 1 : 0;
wrec.w_oflags = oflags;
wrec.w_pid = pid;
wrec.w_offset = offset;
wrec.w_nbytes = nbytes;
wrec.w_pathlen = strlen(file);
memcpy(wrec.w_path, file, wrec.w_pathlen);
wrec.w_hostlen = strlen(Host);
memcpy(wrec.w_host, Host, wrec.w_hostlen);
wrec.w_patternlen = Pattern_Length;
memcpy(wrec.w_pattern, Pattern, wrec.w_patternlen);
wrec.w_done = 0;
if ((woffset = wlog_record_write(&Wlog, &wrec, -1)) == -1) {
doio_fprintf(stderr,
"Could not append to write-log: %s (%d)\n",
SYSERR, errno);
} else {
logged_write = 1;
}
}
switch (req->r_type) {
case WRITE:
/*
* sync write
*/
if (lseek(fd, offset, SEEK_SET) == -1) {
doio_fprintf(stderr,
"lseek(%d, %d, SEEK_SET) failed: %s (%d)\n",
fd, offset, SYSERR, errno);
return -1;
}
rval = write(fd, addr, nbytes);
if (rval == -1) {
doio_fprintf(stderr,
"write() failed: %s (%d)\n%s\n",
SYSERR, errno,
format_rw(req, fd, addr, -1, Pattern,
NULL));
#ifdef sgi
doio_fprintf(stderr,
"write() failed: %s\n\twrite(%d, %#o, %d)\n\toffset %d, nbytes%%miniou(%d)=%d, oflags=%#o memalign=%d, addr%%memalign=%d\n",
strerror(errno),
fd, addr, nbytes,
offset,
fdc->c_miniosz, nbytes % fdc->c_miniosz,
oflags, fdc->c_memalign,
(long)addr % fdc->c_memalign);
#else
doio_fprintf(stderr,
"write() failed: %s\n\twrite(%d, %#o, %d)\n\toffset %d, nbytes%%1B=%d, oflags=%#o\n",
strerror(errno),
fd, addr, nbytes,
offset, nbytes % 4096, oflags);
#endif
doio_upanic(U_RVAL);
} else if (rval != nbytes) {
doio_fprintf(stderr,
"write() returned wrong # bytes - expected %d, got %d\n%s\n",
nbytes, rval,
format_rw(req, fd, addr, -1, Pattern,
NULL));
doio_upanic(U_RVAL);
rval = -1;
}
break;
#ifdef CRAY
case WRITEA:
/*
* async write
*/
if (lseek(fd, offset, SEEK_SET) == -1) {
doio_fprintf(stderr,
"lseek(%d, %d, SEEK_SET) failed: %s (%d)\n",
fd, offset, SYSERR, errno);
return -1;
}
aio_strat = req->r_data.write.r_aio_strat;
signo = (aio_strat == A_SIGNAL) ? SIGUSR1 : 0;
aio_id = aio_register(fd, aio_strat, signo);
aiop = aio_slot(aio_id);
/*
* init iosw and do the async write
*/
if (writea(fd, addr, nbytes, &aiop->iosw, signo) == -1) {
doio_fprintf(stderr,
"writea() failed: %s (%d)\n%s\n",
SYSERR, errno,
format_rw(req, fd, addr, -1, Pattern,
NULL));
doio_upanic(U_RVAL);
aio_unregister(aio_id);
rval = -1;
} else {
/*
* Wait for io to complete
*/
aio_wait(aio_id);
/*
* check that iosw is ok
*/
if (aiop->iosw.sw_count != nbytes) {
doio_fprintf(stderr,
"Bad iosw from writea()\nExpected (%d,%d,%d), got (%d,%d,%d)\n%s\n",
1, 0, nbytes,
aiop->iosw.sw_flag,
aiop->iosw.sw_error,
aiop->iosw.sw_count,
format_rw(req, fd, addr, -1,
Pattern, &aiop->iosw));
aio_unregister(aio_id);
doio_upanic(U_IOSW);
rval = -1;
} else {
aio_unregister(aio_id);
rval = 0;
}
}
break;
#endif /* CRAY */
}
/*
* Verify that the data was written correctly - check_file() returns
* a non-null pointer which contains an error message if there are
* problems.
*/
if (v_opt) {
msg = check_file(file, offset, nbytes, Pattern, Pattern_Length,
0, oflags & O_PARALLEL);
if (msg != NULL) {
doio_fprintf(stderr, "%s%s\n", msg,
#ifdef CRAY
format_rw(req, fd, addr, -1, Pattern,
&aiop->iosw)
#else
format_rw(req, fd, addr, -1, Pattern, NULL)
#endif
);
doio_upanic(U_CORRUPTION);
exit(E_COMPARE);
}
}
/*
* General cleanup ...
*
* Write extent information to the write-log, so that doio_check can do
* corruption detection. Note that w_done is set to 1, indicating that
* the write has been verified as complete. We don't need to write the
* filename on the second logging.
*/
if (w_opt && logged_write) {
wrec.w_done = 1;
wlog_record_write(&Wlog, &wrec, woffset);
}
/*
* Unlock file region if necessary
*/
if (got_lock) {
if (lock_file_region(file, fd, F_UNLCK, offset, nbytes) < 0) {
alloc_mem(-1);
exit(E_INTERNAL);
}
}
return ((rval == -1) ? -1 : 0);
}
/*
* Simple routine to lock/unlock a file using fcntl()
*/
int lock_file_region(char *fname, int fd, int type, int start, int nbytes)
{
struct flock flk;
flk.l_type = type;
flk.l_whence = 0;
flk.l_start = start;
flk.l_len = nbytes;
if (fcntl(fd, F_SETLKW, &flk) < 0) {
doio_fprintf(stderr,
"fcntl(%d, %d, %#o) failed for file %s, lock type %d, offset %d, length %d: %s (%d), open flags: %#o\n",
fd, F_SETLKW, &flk, fname, type,
start, nbytes, SYSERR, errno,
fcntl(fd, F_GETFL, 0));
return -1;
}
return 0;
}
/*
* Perform a listio request.
*/
#ifdef CRAY
char *format_listio(struct io_req *ioreq, int lcmd, struct listreq *list,
int nent, int fd, char *pattern)
{
static char *errbuf = NULL;
struct listio_req *liop = &ioreq->r_data.listio;
struct listreq *listreq;
char *cp, *cmd, *opcode, *aio_strat;
int i;
switch (lcmd) {
case LC_START:
cmd = "LC_START";
break;
case LC_WAIT:
cmd = "LC_WAIT";
break;
default:
cmd = "???";
break;
}
if (errbuf == NULL)
errbuf = malloc(32768);
cp = errbuf;
cp += sprintf(cp, "Request number %d\n", Reqno);
cp += sprintf(cp, "syscall: listio(%s, %#o, %d)\n\n", cmd, list, nent);
aio_strat = format_strat(liop->r_aio_strat);
for (i = 0; i < nent; i++) {
cp += sprintf(cp, "struct lioreq for request element %d\n", i);
cp += sprintf(cp, "----------------------------------------\n");
listreq = list + i;
switch (listreq->li_opcode) {
case LO_READ:
opcode = "LO_READ";
break;
case LO_WRITE:
opcode = "LO_WRITE";
break;
default:
opcode = "???";
break;
}
cp += sprintf(cp, " li_opcode = %s\n", opcode);
cp +=
sprintf(cp, " li_drvr = %#o\n",
listreq->li_drvr);
cp +=
sprintf(cp, " li_flags = %#o\n",
listreq->li_flags);
cp +=
sprintf(cp, " li_offset = %d\n",
listreq->li_offset);
cp +=
sprintf(cp, " li_fildes = %d\n",
listreq->li_fildes);
cp +=
sprintf(cp, " li_buf = %#o\n",
listreq->li_buf);
cp +=
sprintf(cp, " li_nbyte = %d\n",
listreq->li_nbyte);
cp +=
sprintf(cp, " li_status = %#o (%d, %d, %d)\n",
listreq->li_status, listreq->li_status->sw_flag,
listreq->li_status->sw_error,
listreq->li_status->sw_count);
cp +=
sprintf(cp, " li_signo = %d\n",
listreq->li_signo);
cp +=
sprintf(cp, " li_nstride = %d\n",
listreq->li_nstride);
cp +=
sprintf(cp, " li_filstride = %d\n",
listreq->li_filstride);
cp +=
sprintf(cp, " li_memstride = %d\n",
listreq->li_memstride);
cp +=
sprintf(cp, " io completion strategy is %s\n",
aio_strat);
}
return errbuf;
}
#endif /* CRAY */
int do_listio(struct io_req *req)
{
#ifdef CRAY
struct listio_req *lio;
int fd, oflags, signo, nb, i;
int logged_write, rval, got_lock;
int aio_strat, aio_id;
int min_byte, max_byte;
int mem_needed;
int foffset, fstride, mstride, nstrides;
char *moffset;
long offset, woffset;
char *addr, *msg;
sigset_t block_mask, omask;
struct wlog_rec wrec;
struct aio_info *aiop;
struct listreq lio_req;
lio = &req->r_data.listio;
/*
* If bytes per stride is less than the stride size, drop the request
* since it will cause overlapping strides, and we cannot predict
* the order they will complete in.
*/
if (lio->r_filestride && abs(lio->r_filestride) < lio->r_nbytes) {
doio_fprintf(stderr,
"do_listio(): Bogus listio request - abs(filestride) [%d] < nbytes [%d]\n",
abs(lio->r_filestride), lio->r_nbytes);
return -1;
}
/*
* Allocate core memory. Initialize the data to be written. Make
* sure we get enough, based on the memstride.
*/
mem_needed =
stride_bounds(0, lio->r_memstride, lio->r_nstrides,
lio->r_nbytes, NULL, NULL);
if ((rval = alloc_mem(mem_needed + wtob(1))) < 0) {
return rval;
}
/*
* Set the memory address pointer. If the io is not raw, adjust
* addr by a random amount, so that non-raw io is not necessarily
* word aligned.
*/
addr = Memptr;
if (!(lio->r_uflags & F_WORD_ALIGNED)) {
addr += random_range(0, wtob(1) - 1, 1, NULL);
}
if (lio->r_opcode == LO_WRITE) {
Pattern[0] = lio->r_pattern;
(*Data_Fill) (Memptr, mem_needed, Pattern, Pattern_Length, 0);
if (addr != Memptr)
memmove(addr, Memptr, mem_needed);
}
/*
* Get a descriptor to do the io on. No need to do an lseek, as this
* is encoded in the listio request.
*/
if ((fd = alloc_fd(lio->r_file, lio->r_oflags)) == -1) {
return -1;
}
rval = -1;
got_lock = 0;
logged_write = 0;
/*
* If the opcode is LO_WRITE, lock all regions of the file that
* are touched by this listio request. Currently, we use
* stride_bounds() to figure out the min and max bytes affected, and
* lock the entire region, regardless of the file stride.
*/
if (lio->r_opcode == LO_WRITE && k_opt) {
stride_bounds(lio->r_offset,
lio->r_filestride, lio->r_nstrides,
lio->r_nbytes, &min_byte, &max_byte);
if (lock_file_region(lio->r_file, fd, F_WRLCK,
min_byte, (max_byte - min_byte + 1)) < 0) {
doio_fprintf(stderr,
"stride_bounds(%d, %d, %d, %d, ..., ...) set min_byte to %d, max_byte to %d\n",
lio->r_offset, lio->r_filestride,
lio->r_nstrides, lio->r_nbytes, min_byte,
max_byte);
return -1;
} else {
got_lock = 1;
}
}
/*
* async write
*/
aio_strat = lio->r_aio_strat;
signo = (aio_strat == A_SIGNAL) ? SIGUSR1 : 0;
aio_id = aio_register(fd, aio_strat, signo);
aiop = aio_slot(aio_id);
/*
* Form the listio request, and make the call.
*/
lio_req.li_opcode = lio->r_opcode;
lio_req.li_drvr = 0;
lio_req.li_flags = LF_LSEEK;
lio_req.li_offset = lio->r_offset;
lio_req.li_fildes = fd;
if (lio->r_memstride >= 0 || lio->r_nstrides <= 1) {
lio_req.li_buf = addr;
} else {
lio_req.li_buf = addr + mem_needed - lio->r_nbytes;
}
lio_req.li_nbyte = lio->r_nbytes;
lio_req.li_status = &aiop->iosw;
lio_req.li_signo = signo;
lio_req.li_nstride = lio->r_nstrides;
lio_req.li_filstride = lio->r_filestride;
lio_req.li_memstride = lio->r_memstride;
/*
* If signo != 0, block signo while we're in the system call, so that
* we don't get interrupted syscall failures.
*/
if (signo) {
sigemptyset(&block_mask);
sigaddset(&block_mask, signo);
sigprocmask(SIG_BLOCK, &block_mask, &omask);
}
if (listio(lio->r_cmd, &lio_req, 1) < 0) {
doio_fprintf(stderr,
"listio() failed: %s (%d)\n%s\n",
SYSERR, errno,
format_listio(req, lio->r_cmd, &lio_req, 1, fd,
Pattern));
aio_unregister(aio_id);
doio_upanic(U_RVAL);
goto lio_done;
}
if (signo) {
sigprocmask(SIG_SETMASK, &omask, NULL);
}
/*
* Wait for io to complete
*/
aio_wait(aio_id);
nstrides = lio->r_nstrides ? lio->r_nstrides : 1;
if (aiop->iosw.sw_count != lio->r_nbytes * nstrides) {
doio_fprintf(stderr,
"Bad iosw from listio()\nExpected (%d,%d,%d), got (%d,%d,%d)\n%s\n",
1, 0, lio->r_nbytes * lio->r_nstrides,
aiop->iosw.sw_flag,
aiop->iosw.sw_error, aiop->iosw.sw_count,
format_listio(req, lio->r_cmd, &lio_req, 1, fd,
Pattern));
aio_unregister(aio_id);
doio_upanic(U_IOSW);
goto lio_done;
}
aio_unregister(aio_id);
/*
* Verify that the data was written correctly - check_file() returns
* a non-null pointer which contains an error message if there are
* problems.
*
* For listio, we basically have to make 1 call to check_file for each
* stride.
*/
if (v_opt && lio_req.li_opcode == LO_WRITE) {
fstride = lio->r_filestride ? lio->r_filestride : lio->r_nbytes;
mstride = lio->r_memstride ? lio->r_memstride : lio->r_nbytes;
foffset = lio->r_offset;
if (mstride > 0 || lio->r_nstrides <= 1) {
moffset = addr;
} else {
moffset = addr + mem_needed - lio->r_nbytes;
}
for (i = 0; i < lio_req.li_nstride; i++) {
msg = check_file(lio->r_file,
foffset, lio->r_nbytes,
Pattern, Pattern_Length,
moffset - addr,
lio->r_oflags & O_PARALLEL);
if (msg != NULL) {
doio_fprintf(stderr, "%s\n%s\n",
msg,
format_listio(req, lio->r_cmd,
&lio_req, 1, fd,
Pattern));
doio_upanic(U_CORRUPTION);
exit(E_COMPARE);
}
moffset += mstride;
foffset += fstride;
}
}
rval = 0;
lio_done:
/*
* General cleanup ...
*
*/
/*
* Release file locks if necessary
*/
if (got_lock) {
if (lock_file_region(lio->r_file, fd, F_UNLCK,
min_byte, (max_byte - min_byte + 1)) < 0) {
return -1;
}
}
return rval;
#else
return -1;
#endif
}
/*
* perform ssread/sswrite operations
*/
#ifdef _CRAY1
int do_ssdio(struct io_req *req)
{
int nbytes, nb;
char errbuf[BSIZE];
nbytes = req->r_data.ssread.r_nbytes;
/*
* Grab core and sds space
*/
if ((nb = alloc_mem(nbytes)) < 0)
return nb;
if (alloc_sds(nbytes) == -1)
return -1;
if (req->r_type == SSWRITE) {
/*
* Init data and ship it to the ssd
*/
Pattern[0] = req->r_data.sswrite.r_pattern;
/*pattern_fill(Memptr, nbytes, Pattern, Pattern_Length, 0); */
(*Data_Fill) (Memptr, nbytes, Pattern, Pattern_Length, 0);
if (sswrite((long)Memptr, (long)Sdsptr, btoc(nbytes)) == -1) {
doio_fprintf(stderr, "sswrite() failed: %s (%d)\n%s\n",
SYSERR, errno,
format_sds(req, Memptr, Sdsptr, Pattern));
doio_upanic(U_RVAL);
return -1;
}
} else {
/*
* read from sds
*/
if (ssread((long)Memptr, (long)Sdsptr, btoc(nbytes)) == -1) {
doio_fprintf(stderr, "ssread() failed: %s (%d)\n%s\n",
SYSERR, errno,
format_sds(req, Memptr, Sdsptr, Pattern));
doio_upanic(U_RVAL);
return -1;
}
}
/*
* Verify data if SSWRITE and v_opt
*/
if (v_opt && req->r_type == SSWRITE) {
ssread((long)Memptr, (long)Sdsptr, btoc(nbytes));
if (pattern_check(Memptr, nbytes, Pattern, Pattern_Length, 0) ==
-1) {
doio_fprintf(stderr,
"sds DATA COMPARE ERROR - ABORTING\n%s\n",
format_sds(req, Memptr, Sdsptr, Pattern));
doio_upanic(U_CORRUPTION);
exit(E_COMPARE);
}
}
}
#else
#ifdef CRAY
int do_ssdio(struct io_req *req)
{
doio_fprintf(stderr,
"Internal Error - do_ssdio() called on a non-cray1 system\n");
alloc_mem(-1);
exit(E_INTERNAL);
}
#endif /* CRAY */
#endif /* _CRAY1 */
char *fmt_ioreq(struct io_req *ioreq, struct syscall_info *sy, int fd)
{
static char *errbuf = NULL;
char *cp;
struct rw_req *io;
struct smap *aname;
#ifdef CRAY
struct stat sbuf;
#endif
#ifdef sgi
struct dioattr finfo;
#endif
if (errbuf == NULL)
errbuf = malloc(32768);
io = &ioreq->r_data.io;
/*
* Look up async I/O completion strategy
*/
for (aname = aionames;
aname->value != -1 && aname->value != io->r_aio_strat; aname++) ;
cp = errbuf;
cp += sprintf(cp, "Request number %d\n", Reqno);
cp +=
sprintf(cp, " fd %d is file %s - open flags are %#o %s\n",
fd, io->r_file, io->r_oflags, format_oflags(io->r_oflags));
if (sy->sy_flags & SY_WRITE) {
cp +=
sprintf(cp,
" write done at file offset %d - pattern is %c (%#o)\n",
io->r_offset,
(io->r_pattern == '\0') ? '?' : io->r_pattern,
io->r_pattern);
} else {
cp += sprintf(cp, " read done at file offset %d\n",
io->r_offset);
}
if (sy->sy_flags & SY_ASYNC) {
cp +=
sprintf(cp,
" async io completion strategy is %s\n",
aname->string);
}
cp +=
sprintf(cp,
" number of requests is %d, strides per request is %d\n",
io->r_nent, io->r_nstrides);
cp += sprintf(cp, " i/o byte count = %d\n", io->r_nbytes);
cp += sprintf(cp, " memory alignment is %s\n",
(io->
r_uflags & F_WORD_ALIGNED) ? "aligned" : "unaligned");
#ifdef CRAY
if (io->r_oflags & O_RAW) {
cp +=
sprintf(cp,
" RAW I/O: offset %% 4096 = %d length %% 4096 = %d\n",
io->r_offset % 4096, io->r_nbytes % 4096);
fstat(fd, &sbuf);
cp +=
sprintf(cp,
" optimal file xfer size: small: %d large: %d\n",
sbuf.st_blksize, sbuf.st_oblksize);
cp +=
sprintf(cp, " cblks %d cbits %#o\n", sbuf.st_cblks,
sbuf.st_cbits);
}
#endif
#ifdef sgi
if (io->r_oflags & O_DIRECT) {
if (fcntl(fd, F_DIOINFO, &finfo) == -1) {
cp +=
sprintf(cp,
" Error %s (%d) getting direct I/O info\n",
strerror(errno), errno);
finfo.d_mem = 1;
finfo.d_miniosz = 1;
finfo.d_maxiosz = 1;
}
cp +=
sprintf(cp,
" DIRECT I/O: offset %% %d = %d length %% %d = %d\n",
finfo.d_miniosz, io->r_offset % finfo.d_miniosz,
io->r_nbytes, io->r_nbytes % finfo.d_miniosz);
cp +=
sprintf(cp,
" mem alignment 0x%x xfer size: small: %d large: %d\n",
finfo.d_mem, finfo.d_miniosz, finfo.d_maxiosz);
}
#endif
return (errbuf);
}
/*
* Issue listio requests
*/
#ifdef CRAY
struct status *sy_listio(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
int offset, nbytes, nstrides, nents, aio_strat;
int aio_id, signo, o, i, lc;
char *a;
struct listreq *lio_req, *l;
struct aio_info *aiop;
struct status *status;
/*
* Initialize common fields - assumes r_oflags, r_file, r_offset, and
* r_nbytes are at the same offset in the read_req and reada_req
* structures.
*/
offset = req->r_data.io.r_offset;
nbytes = req->r_data.io.r_nbytes;
nstrides = req->r_data.io.r_nstrides;
nents = req->r_data.io.r_nent;
aio_strat = req->r_data.io.r_aio_strat;
lc = (sysc->sy_flags & SY_ASYNC) ? LC_START : LC_WAIT;
status = malloc(sizeof(struct status));
if (status == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
status->aioid = malloc((nents + 1) * sizeof(int));
if (status->aioid == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
signo = (aio_strat == A_SIGNAL) ? SIGUSR1 : 0;
lio_req = malloc(nents * sizeof(struct listreq));
if (lio_req == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
for (l = lio_req, a = addr, o = offset, i = 0;
i < nents; l++, a += nbytes, o += nbytes, i++) {
aio_id = aio_register(fd, aio_strat, signo);
aiop = aio_slot(aio_id);
status->aioid[i] = aio_id;
l->li_opcode = (sysc->sy_flags & SY_WRITE) ? LO_WRITE : LO_READ;
l->li_offset = o;
l->li_fildes = fd;
l->li_buf = a;
l->li_nbyte = nbytes;
l->li_status = &aiop->iosw;
l->li_signo = signo;
l->li_nstride = nstrides;
l->li_filstride = 0;
l->li_memstride = 0;
l->li_drvr = 0;
l->li_flags = LF_LSEEK;
}
status->aioid[nents] = -1; /* end sentinel */
if ((status->rval = listio(lc, lio_req, nents)) == -1) {
status->err = errno;
}
free(lio_req);
return (status);
}
/*
* Calculate the size of a request in bytes and min/max boundaries
*
* This assumes filestride & memstride = 0.
*/
int listio_mem(struct io_req *req, int offset, int fmstride, int *min, int *max)
{
int i, size;
size = stride_bounds(offset, fmstride,
req->r_data.io.r_nstrides * req->r_data.io.r_nent,
req->r_data.io.r_nbytes, min, max);
return (size);
}
char *fmt_listio(struct io_req *req, struct syscall_info *sy, int fd,
char *addr)
{
static char *errbuf = NULL;
char *cp;
char *c, *opcode;
int i;
if (errbuf == NULL) {
errbuf = malloc(32768);
if (errbuf == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
}
c = (sy->sy_flags & SY_ASYNC) ? "lc_wait" : "lc_start";
cp = errbuf;
cp += sprintf(cp, "syscall: listio(%s, (?), %d)\n",
c, req->r_data.io.r_nent);
cp += sprintf(cp, " data buffer at %#o\n", addr);
return (errbuf);
}
#endif /* CRAY */
#ifdef sgi
struct status *sy_pread(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
int rc;
struct status *status;
rc = pread(fd, addr, req->r_data.io.r_nbytes, req->r_data.io.r_offset);
status = malloc(sizeof(struct status));
if (status == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
status->aioid = NULL;
status->rval = rc;
status->err = errno;
return (status);
}
struct status *sy_pwrite(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
int rc;
struct status *status;
rc = pwrite(fd, addr, req->r_data.io.r_nbytes, req->r_data.io.r_offset);
status = malloc(sizeof(struct status));
if (status == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
status->aioid = NULL;
status->rval = rc;
status->err = errno;
return (status);
}
char *fmt_pread(struct io_req *req, struct syscall_info *sy, int fd, char *addr)
{
static char *errbuf = NULL;
char *cp;
if (errbuf == NULL) {
errbuf = malloc(32768);
if (errbuf == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
}
cp = errbuf;
cp += sprintf(cp, "syscall: %s(%d, 0x%lx, %d)\n",
sy->sy_name, fd, addr, req->r_data.io.r_nbytes);
return (errbuf);
}
#endif /* sgi */
#ifndef CRAY
struct status *sy_readv(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
struct status *sy_rwv();
return sy_rwv(req, sysc, fd, addr, 0);
}
struct status *sy_writev(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
struct status *sy_rwv();
return sy_rwv(req, sysc, fd, addr, 1);
}
struct status *sy_rwv(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr, int rw)
{
int rc;
struct status *status;
struct iovec iov[2];
status = malloc(sizeof(struct status));
if (status == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
status->aioid = NULL;
/* move to the desired file position. */
if ((rc = lseek(fd, req->r_data.io.r_offset, SEEK_SET)) == -1) {
status->rval = rc;
status->err = errno;
return (status);
}
iov[0].iov_base = addr;
iov[0].iov_len = req->r_data.io.r_nbytes;
if (rw)
rc = writev(fd, iov, 1);
else
rc = readv(fd, iov, 1);
status->aioid = NULL;
status->rval = rc;
status->err = errno;
return (status);
}
char *fmt_readv(struct io_req *req, struct syscall_info *sy, int fd, char *addr)
{
static char errbuf[32768];
char *cp;
cp = errbuf;
cp += sprintf(cp, "syscall: %s(%d, (iov on stack), 1)\n",
sy->sy_name, fd);
return (errbuf);
}
#endif /* !CRAY */
#ifdef sgi
struct status *sy_aread(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
struct status *sy_arw();
return sy_arw(req, sysc, fd, addr, 0);
}
struct status *sy_awrite(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
struct status *sy_arw();
return sy_arw(req, sysc, fd, addr, 1);
}
/*
#define sy_aread(A, B, C, D) sy_arw(A, B, C, D, 0)
#define sy_awrite(A, B, C, D) sy_arw(A, B, C, D, 1)
*/
struct status *sy_arw(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr, int rw)
{
/* POSIX 1003.1b-1993 Async read */
struct status *status;
int rc;
int aio_id, aio_strat, signo;
struct aio_info *aiop;
status = malloc(sizeof(struct status));
if (status == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
aio_strat = req->r_data.io.r_aio_strat;
signo = (aio_strat == A_SIGNAL) ? SIGUSR1 : 0;
aio_id = aio_register(fd, aio_strat, signo);
aiop = aio_slot(aio_id);
memset((void *)&aiop->aiocb, 0, sizeof(aiocb_t));
aiop->aiocb.aio_fildes = fd;
aiop->aiocb.aio_nbytes = req->r_data.io.r_nbytes;
aiop->aiocb.aio_offset = req->r_data.io.r_offset;
aiop->aiocb.aio_buf = addr;
aiop->aiocb.aio_reqprio = 0; /* must be 0 */
aiop->aiocb.aio_lio_opcode = 0;
if (aio_strat == A_SIGNAL) { /* siginfo(2) stuff */
aiop->aiocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
aiop->aiocb.aio_sigevent.sigev_signo = signo;
} else if (aio_strat == A_CALLBACK) {
aiop->aiocb.aio_sigevent.sigev_signo = 0;
aiop->aiocb.aio_sigevent.sigev_notify = SIGEV_CALLBACK;
aiop->aiocb.aio_sigevent.sigev_func = cb_handler;
aiop->aiocb.aio_sigevent.sigev_value.sival_int = aio_id;
} else {
aiop->aiocb.aio_sigevent.sigev_notify = SIGEV_NONE;
aiop->aiocb.aio_sigevent.sigev_signo = 0;
}
if (rw)
rc = aio_write(&aiop->aiocb);
else
rc = aio_read(&aiop->aiocb);
status->aioid = malloc(2 * sizeof(int));
if (status->aioid == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
status->aioid[0] = aio_id;
status->aioid[1] = -1;
status->rval = rc;
status->err = errno;
return (status);
}
char *fmt_aread(struct io_req *req, struct syscall_info *sy, int fd, char *addr)
{
static char errbuf[32768];
char *cp;
cp = errbuf;
cp += sprintf(cp, "syscall: %s(&aiop->aiocb)\n", sy->sy_name);
return (errbuf);
}
#endif /* sgi */
#ifndef CRAY
struct status *sy_mmread(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
struct status *sy_mmrw();
return sy_mmrw(req, sysc, fd, addr, 0);
}
struct status *sy_mmwrite(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr)
{
struct status *sy_mmrw();
return sy_mmrw(req, sysc, fd, addr, 1);
}
struct status *sy_mmrw(struct io_req *req, struct syscall_info *sysc, int fd,
char *addr, int rw)
{
/*
* mmap read/write
* This version is oriented towards mmaping the file to memory
* ONCE and keeping it mapped.
*/
struct status *status;
void *mrc = NULL, *memaddr = NULL;
struct fd_cache *fdc;
struct stat sbuf;
int rc;
status = malloc(sizeof(struct status));
if (status == NULL) {
doio_fprintf(stderr, "malloc failed, %s/%d\n",
__FILE__, __LINE__);
return NULL;
}
status->aioid = NULL;
status->rval = -1;
fdc = alloc_fdcache(req->r_data.io.r_file, req->r_data.io.r_oflags);
if (v_opt || fdc->c_memaddr == NULL) {
if (fstat(fd, &sbuf) < 0) {
doio_fprintf(stderr, "fstat failed, errno=%d\n", errno);
status->err = errno;
return (status);
}
fdc->c_memlen = (int)sbuf.st_size;
mrc = mmap(NULL, (int)sbuf.st_size,
rw ? PROT_WRITE | PROT_READ : PROT_READ,
MAP_SHARED, fd, 0);
if (mrc == MAP_FAILED) {
doio_fprintf(stderr, "mmap() failed - 0x%lx %d\n",
mrc, errno);
status->err = errno;
return (status);
}
fdc->c_memaddr = mrc;
}
memaddr = (void *)((char *)fdc->c_memaddr + req->r_data.io.r_offset);
active_mmap_rw = 1;
if (rw)
memcpy(memaddr, addr, req->r_data.io.r_nbytes);
else
memcpy(addr, memaddr, req->r_data.io.r_nbytes);
if (v_opt)
msync(fdc->c_memaddr, (int)sbuf.st_size, MS_SYNC);
active_mmap_rw = 0;
status->rval = req->r_data.io.r_nbytes;
status->err = 0;
if (v_opt) {
rc = munmap(mrc, (int)sbuf.st_size);
}
return (status);
}
char *fmt_mmrw(struct io_req *req, struct syscall_info *sy, int fd, char *addr)
{
static char errbuf[32768];
char *cp;
struct fd_cache *fdc;
void *memaddr;
fdc = alloc_fdcache(req->r_data.io.r_file, req->r_data.io.r_oflags);
cp = errbuf;
cp += sprintf(cp, "syscall: %s(NULL, %d, %s, MAP_SHARED, %d, 0)\n",
sy->sy_name,
fdc->c_memlen,
(sy->sy_flags & SY_WRITE) ? "PROT_WRITE" : "PROT_READ",
fd);
cp += sprintf(cp, "\tfile is mmaped to: 0x%lx\n",
(unsigned long)fdc->c_memaddr);
memaddr = (void *)((char *)fdc->c_memaddr + req->r_data.io.r_offset);
cp += sprintf(cp, "\tfile-mem=0x%lx, length=%d, buffer=0x%lx\n",
(unsigned long)memaddr, req->r_data.io.r_nbytes,
(unsigned long)addr);
return (errbuf);
}
#endif /* !CRAY */
struct syscall_info syscalls[] = {
#ifdef CRAY
{"listio-read-sync", LREAD,
sy_listio, NULL, fmt_listio,
SY_IOSW},
{"listio-read-strides-sync", LSREAD,
sy_listio, listio_mem, fmt_listio,
SY_IOSW},
{"listio-read-reqs-sync", LEREAD,
sy_listio, listio_mem, fmt_listio,
SY_IOSW},
{"listio-read-async", LREADA,
sy_listio, NULL, fmt_listio,
SY_IOSW | SY_ASYNC},
{"listio-read-strides-async", LSREADA,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_ASYNC},
{"listio-read-reqs-async", LEREADA,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_ASYNC},
{"listio-write-sync", LWRITE,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_WRITE},
{"listio-write-strides-sync", LSWRITE,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_WRITE},
{"listio-write-reqs-sync", LEWRITE,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_WRITE},
{"listio-write-async", LWRITEA,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_WRITE | SY_ASYNC},
{"listio-write-strides-async", LSWRITEA,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_WRITE | SY_ASYNC},
{"listio-write-reqs-async", LEWRITEA,
sy_listio, listio_mem, fmt_listio,
SY_IOSW | SY_WRITE | SY_ASYNC},
#endif
#ifdef sgi
{"aread", AREAD,
sy_aread, NULL, fmt_aread,
SY_IOSW | SY_ASYNC},
{"awrite", AWRITE,
sy_awrite, NULL, fmt_aread,
SY_IOSW | SY_WRITE | SY_ASYNC},
{"pread", PREAD,
sy_pread, NULL, fmt_pread,
0},
{"pwrite", PWRITE,
sy_pwrite, NULL, fmt_pread,
SY_WRITE},
#endif
#ifndef CRAY
{"readv", READV,
sy_readv, NULL, fmt_readv,
0},
{"writev", WRITEV,
sy_writev, NULL, fmt_readv,
SY_WRITE},
{"mmap-read", MMAPR,
sy_mmread, NULL, fmt_mmrw,
0},
{"mmap-write", MMAPW,
sy_mmwrite, NULL, fmt_mmrw,
SY_WRITE},
#endif
{NULL, 0,
0, 0, 0,
0},
};
int do_rw(struct io_req *req)
{
static int pid = -1;
int fd, offset, nbytes, nstrides, nents, oflags;
int rval, mem_needed, i;
int logged_write, got_lock, pattern;
off_t woffset;
int min_byte, max_byte;
char *addr, *file, *msg;
struct status *s;
struct wlog_rec wrec;
struct syscall_info *sy;
#if defined(CRAY) || defined(sgi)
struct aio_info *aiop;
struct iosw *iosw;
#endif
#ifdef sgi
struct fd_cache *fdc;
#endif
woffset = 0;
/*
* Initialize common fields - assumes r_oflags, r_file, r_offset, and
* r_nbytes are at the same offset in the read_req and reada_req
* structures.
*/
file = req->r_data.io.r_file;
oflags = req->r_data.io.r_oflags;
offset = req->r_data.io.r_offset;
nbytes = req->r_data.io.r_nbytes;
nstrides = req->r_data.io.r_nstrides;
nents = req->r_data.io.r_nent;
pattern = req->r_data.io.r_pattern;
if (nents >= MAX_AIO) {
doio_fprintf(stderr,
"do_rw: too many list requests, %d. Maximum is %d\n",
nents, MAX_AIO);
return (-1);
}
/*
* look up system call info
*/
for (sy = syscalls; sy->sy_name != NULL && sy->sy_type != req->r_type;
sy++) ;
if (sy->sy_name == NULL) {
doio_fprintf(stderr, "do_rw: unknown r_type %d.\n",
req->r_type);
return (-1);
}
/*
* Get an open file descriptor
* Note: must be done before memory allocation so that the direct i/o
* information is available in mem. allocate
*/
if ((fd = alloc_fd(file, oflags)) == -1)
return -1;
/*
* Allocate core memory and possibly sds space. Initialize the
* data to be written. Make sure we get enough, based on the
* memstride.
*
* need:
* 1 extra word for possible partial-word address "bump"
* 1 extra word for dynamic pattern overrun
* MPP_BUMP extra words for T3E non-hw-aligned memory address.
*/
if (sy->sy_buffer != NULL) {
mem_needed = (*sy->sy_buffer) (req, 0, 0, NULL, NULL);
} else {
mem_needed = nbytes;
}
#ifdef CRAY
if ((rval =
alloc_mem(mem_needed + wtob(1) * 2 +
MPP_BUMP * sizeof(UINT64_T))) < 0) {
return rval;
}
#else
#ifdef sgi
/* get memory alignment for using DIRECT I/O */
fdc = alloc_fdcache(file, oflags);
if ((rval = alloc_mem(mem_needed + wtob(1) * 2 + fdc->c_memalign)) < 0) {
return rval;
}
#else
/* what is !CRAY && !sgi ? */
if ((rval = alloc_mem(mem_needed + wtob(1) * 2)) < 0) {
return rval;
}
#endif /* sgi */
#endif /* CRAY */
Pattern[0] = pattern;
/*
* Allocate SDS space for backdoor write if desired
*/
if (oflags & O_SSD) {
#ifdef CRAY
#ifndef _CRAYMPP
if (alloc_sds(nbytes) == -1)
return -1;
if (sy->sy_flags & SY_WRITE) {
/*pattern_fill(Memptr, mem_needed, Pattern, Pattern_Length, 0); */
(*Data_Fill) (Memptr, nbytes, Pattern, Pattern_Length,
0);
if (sswrite((long)Memptr, Sdsptr, btoc(mem_needed)) ==
-1) {
doio_fprintf(stderr,
"sswrite(%d, %d, %d) failed: %s (%d)\n",
(long)Memptr, Sdsptr,
btoc(mem_needed), SYSERR, errno);
fflush(stderr);
return -1;
}
}
addr = (char *)Sdsptr;
#else
doio_fprintf(stderr,
"Invalid O_SSD flag was generated for MPP system\n");
fflush(stderr);
return -1;
#endif /* _CRAYMPP */
#else /* CRAY */
doio_fprintf(stderr,
"Invalid O_SSD flag was generated for non-Cray system\n");
fflush(stderr);
return -1;
#endif /* CRAY */
} else {
addr = Memptr;
/*
* if io is not raw, bump the offset by a random amount
* to generate non-word-aligned io.
*
* On MPP systems, raw I/O must start on an 0x80 byte boundary.
* For non-aligned I/O, bump the address from 1 to 8 words.
*/
if (!(req->r_data.io.r_uflags & F_WORD_ALIGNED)) {
#ifdef _CRAYMPP
addr +=
random_range(0, MPP_BUMP, 1, NULL) * sizeof(int);
#endif
addr += random_range(0, wtob(1) - 1, 1, NULL);
}
#ifdef sgi
/*
* Force memory alignment for Direct I/O
*/
if ((oflags & O_DIRECT) && ((long)addr % fdc->c_memalign != 0)) {
addr +=
fdc->c_memalign - ((long)addr % fdc->c_memalign);
}
#endif
/*
* FILL must be done on a word-aligned buffer.
* Call the fill function with Memptr which is aligned,
* then memmove it to the right place.
*/
if (sy->sy_flags & SY_WRITE) {
(*Data_Fill) (Memptr, mem_needed, Pattern,
Pattern_Length, 0);
if (addr != Memptr)
memmove(addr, Memptr, mem_needed);
}
}
rval = 0;
got_lock = 0;
logged_write = 0;
/*
* Lock data if this is a write and locking option is set
*/
if (sy->sy_flags & SY_WRITE && k_opt) {
if (sy->sy_buffer != NULL) {
(*sy->sy_buffer) (req, offset, 0, &min_byte, &max_byte);
} else {
min_byte = offset;
max_byte = offset + (nbytes * nstrides * nents);
}
if (lock_file_region(file, fd, F_WRLCK,
min_byte, (max_byte - min_byte + 1)) < 0) {
doio_fprintf(stderr,
"file lock failed:\n%s\n",
fmt_ioreq(req, sy, fd));
doio_fprintf(stderr,
" buffer(req, %d, 0, 0x%x, 0x%x)\n",
offset, min_byte, max_byte);
alloc_mem(-1);
exit(E_INTERNAL);
}
got_lock = 1;
}
/*
* Write a preliminary write-log entry. This is done so that
* doio_check can do corruption detection across an interrupt/crash.
* Note that w_done is set to 0. If doio_check sees this, it
* re-creates the file extents as if the write completed, but does not
* do any checking - see comments in doio_check for more details.
*/
if (sy->sy_flags & SY_WRITE && w_opt) {
if (pid == -1) {
pid = getpid();
}
wrec.w_async = (sy->sy_flags & SY_ASYNC) ? 1 : 0;
wrec.w_oflags = oflags;
wrec.w_pid = pid;
wrec.w_offset = offset;
wrec.w_nbytes = nbytes; /* mem_needed -- total length */
wrec.w_pathlen = strlen(file);
memcpy(wrec.w_path, file, wrec.w_pathlen);
wrec.w_hostlen = strlen(Host);
memcpy(wrec.w_host, Host, wrec.w_hostlen);
wrec.w_patternlen = Pattern_Length;
memcpy(wrec.w_pattern, Pattern, wrec.w_patternlen);
wrec.w_done = 0;
if ((woffset = wlog_record_write(&Wlog, &wrec, -1)) == -1) {
doio_fprintf(stderr,
"Could not append to write-log: %s (%d)\n",
SYSERR, errno);
} else {
logged_write = 1;
}
}
s = (*sy->sy_syscall) (req, sy, fd, addr);
if (s->rval == -1) {
doio_fprintf(stderr,
"%s() request failed: %s (%d)\n%s\n%s\n",
sy->sy_name, SYSERR, errno,
fmt_ioreq(req, sy, fd),
(*sy->sy_format) (req, sy, fd, addr));
doio_upanic(U_RVAL);
for (i = 0; i < nents; i++) {
if (s->aioid == NULL)
break;
aio_unregister(s->aioid[i]);
}
rval = -1;
} else {
/*
* If the syscall was async, wait for I/O to complete
*/
#ifndef __linux__
if (sy->sy_flags & SY_ASYNC) {
for (i = 0; i < nents; i++) {
aio_wait(s->aioid[i]);
}
}
#endif
/*
* Check the syscall how-much-data-written return. Look
* for this in either the return value or the 'iosw'
* structure.
*/
if (sy->sy_flags & SY_IOSW) {
#ifdef CRAY
for (i = 0; i < nents; i++) {
if (s->aioid == NULL)
break; /* >>> error condition? */
aiop = aio_slot(s->aioid[i]);
iosw = &aiop->iosw;
if (iosw->sw_error != 0) {
doio_fprintf(stderr,
"%s() iosw error set: %s\n%s\n%s\n",
sy->sy_name,
strerror(iosw->sw_error),
fmt_ioreq(req, sy, fd),
(*sy->sy_format) (req, sy,
fd,
addr));
doio_upanic(U_IOSW);
rval = -1;
} else if (iosw->sw_count != nbytes * nstrides) {
doio_fprintf(stderr,
"Bad iosw from %s() #%d\nExpected (%d,%d,%d), got (%d,%d,%d)\n%s\n%s\n",
sy->sy_name, i,
1, 0, nbytes * nstrides,
iosw->sw_flag,
iosw->sw_error,
iosw->sw_count,
fmt_ioreq(req, sy, fd),
(*sy->sy_format) (req, sy,
fd,
addr));
doio_upanic(U_IOSW);
rval = -1;
}
aio_unregister(s->aioid[i]);
}
#endif /* CRAY */
#ifdef sgi
for (i = 0; s->aioid[i] != -1; i++) {
if (s->aioid == NULL) {
doio_fprintf(stderr,
"aioid == NULL!\n");
break;
}
aiop = aio_slot(s->aioid[i]);
/*
* make sure the io completed without error
*/
if (aiop->aio_errno != 0) {
doio_fprintf(stderr,
"%s() aio error set: %s (%d)\n%s\n%s\n",
sy->sy_name,
strerror(aiop->aio_errno),
aiop->aio_errno,
fmt_ioreq(req, sy, fd),
(*sy->sy_format) (req, sy,
fd,
addr));
doio_upanic(U_IOSW);
rval = -1;
} else if (aiop->aio_ret != nbytes) {
doio_fprintf(stderr,
"Bad aio return from %s() #%d\nExpected (%d,%d), got (%d,%d)\n%s\n%s\n",
sy->sy_name, i,
0, nbytes,
aiop->aio_errno,
aiop->aio_ret,
fmt_ioreq(req, sy, fd),
(*sy->sy_format) (req, sy,
fd,
addr));
aio_unregister(s->aioid[i]);
doio_upanic(U_IOSW);
return -1;
} else {
aio_unregister(s->aioid[i]);
rval = 0;
}
}
#endif /* sgi */
} else {
if (s->rval != mem_needed) {
doio_fprintf(stderr,
"%s() request returned wrong # of bytes - expected %d, got %d\n%s\n%s\n",
sy->sy_name, nbytes, s->rval,
fmt_ioreq(req, sy, fd),
(*sy->sy_format) (req, sy, fd,
addr));
rval = -1;
doio_upanic(U_RVAL);
}
}
}
/*
* Verify that the data was written correctly - check_file() returns
* a non-null pointer which contains an error message if there are
* problems.
*/
if (rval == 0 && sy->sy_flags & SY_WRITE && v_opt) {
msg = check_file(file, offset, nbytes * nstrides * nents,
Pattern, Pattern_Length, 0,
oflags & O_PARALLEL);
if (msg != NULL) {
doio_fprintf(stderr, "%s\n%s\n%s\n",
msg,
fmt_ioreq(req, sy, fd),
(*sy->sy_format) (req, sy, fd, addr));
doio_upanic(U_CORRUPTION);
exit(E_COMPARE);
}
}
/*
* General cleanup ...
*
* Write extent information to the write-log, so that doio_check can do
* corruption detection. Note that w_done is set to 1, indicating that
* the write has been verified as complete. We don't need to write the
* filename on the second logging.
*/
if (w_opt && logged_write) {
wrec.w_done = 1;
wlog_record_write(&Wlog, &wrec, woffset);
}
/*
* Unlock file region if necessary
*/
if (got_lock) {
if (lock_file_region(file, fd, F_UNLCK,
min_byte, (max_byte - min_byte + 1)) < 0) {
alloc_mem(-1);
exit(E_INTERNAL);
}
}
if (s->aioid != NULL)
free(s->aioid);
free(s);
return (rval == -1) ? -1 : 0;
}
/*
* fcntl-based requests
* - F_FRESVSP
* - F_UNRESVSP
* - F_FSYNC
*/
#ifdef sgi
int do_fcntl(struct io_req *req)
{
int fd, oflags, offset, nbytes;
int rval, op;
int got_lock;
int min_byte, max_byte;
char *file, *msg;
struct flock flk;
/*
* Initialize common fields - assumes r_oflags, r_file, r_offset, and
* r_nbytes are at the same offset in the read_req and reada_req
* structures.
*/
file = req->r_data.io.r_file;
oflags = req->r_data.io.r_oflags;
offset = req->r_data.io.r_offset;
nbytes = req->r_data.io.r_nbytes;
flk.l_type = 0;
flk.l_whence = SEEK_SET;
flk.l_start = offset;
flk.l_len = nbytes;
/*
* Get an open file descriptor
*/
if ((fd = alloc_fd(file, oflags)) == -1)
return -1;
rval = 0;
got_lock = 0;
/*
* Lock data if this is locking option is set
*/
if (k_opt) {
min_byte = offset;
max_byte = offset + nbytes;
if (lock_file_region(file, fd, F_WRLCK,
min_byte, (nbytes + 1)) < 0) {
doio_fprintf(stderr, "file lock failed:\n");
doio_fprintf(stderr,
" buffer(req, %d, 0, 0x%x, 0x%x)\n",
offset, min_byte, max_byte);
alloc_mem(-1);
exit(E_INTERNAL);
}
got_lock = 1;
}
switch (req->r_type) {
case RESVSP:
op = F_RESVSP;
msg = "f_resvsp";
break;
case UNRESVSP:
op = F_UNRESVSP;
msg = "f_unresvsp";
break;
#ifdef F_FSYNC
case DFFSYNC:
op = F_FSYNC;
msg = "f_fsync";
break;
#endif
}
rval = fcntl(fd, op, &flk);
if (rval == -1) {
doio_fprintf(stderr,
"fcntl %s request failed: %s (%d)\n\tfcntl(%d, %s %d, {%d %lld ==> %lld}\n",
msg, SYSERR, errno,
fd, msg, op, flk.l_whence,
(long long)flk.l_start, (long long)flk.l_len);
doio_upanic(U_RVAL);
rval = -1;
}
/*
* Unlock file region if necessary
*/
if (got_lock) {
if (lock_file_region(file, fd, F_UNLCK,
min_byte, (max_byte - min_byte + 1)) < 0) {
alloc_mem(-1);
exit(E_INTERNAL);
}
}
return (rval == -1) ? -1 : 0;
}
#endif /* sgi */
/*
* fsync(2) and fdatasync(2)
*/
#ifndef CRAY
int do_sync(struct io_req *req)
{
int fd, oflags;
int rval;
char *file;
/*
* Initialize common fields - assumes r_oflags, r_file, r_offset, and
* r_nbytes are at the same offset in the read_req and reada_req
* structures.
*/
file = req->r_data.io.r_file;
oflags = req->r_data.io.r_oflags;
/*
* Get an open file descriptor
*/
if ((fd = alloc_fd(file, oflags)) == -1)
return -1;
rval = 0;
switch (req->r_type) {
case FSYNC2:
rval = fsync(fd);
break;
case FDATASYNC:
rval = fdatasync(fd);
break;
default:
rval = -1;
}
return (rval == -1) ? -1 : 0;
}
#endif /* !CRAY */
int
doio_pat_fill(char *addr, int mem_needed, char *Pattern, int Pattern_Length,
int shift)
{
return pattern_fill(addr, mem_needed, Pattern, Pattern_Length, 0);
}
char *doio_pat_check(char *buf, int offset, int length, char *pattern,
int pattern_length, int patshift)
{
static char errbuf[4096];
int nb, i, pattern_index;
char *cp, *bufend, *ep;
char actual[33], expected[33];
if (pattern_check(buf, length, pattern, pattern_length, patshift) != 0) {
ep = errbuf;
ep +=
sprintf(ep,
"Corrupt regions follow - unprintable chars are represented as '.'\n");
ep +=
sprintf(ep,
"-----------------------------------------------------------------\n");
pattern_index = patshift % pattern_length;;
cp = buf;
bufend = buf + length;
while (cp < bufend) {
if (*cp != pattern[pattern_index]) {
nb = bufend - cp;
if ((unsigned int)nb > sizeof(expected) - 1) {
nb = sizeof(expected) - 1;
}
ep +=
sprintf(ep,
"corrupt bytes starting at file offset %d\n",
offset + (int)(cp - buf));
/*
* Fill in the expected and actual patterns
*/
memset(expected, 0x00, sizeof(expected));
memset(actual, 0x00, sizeof(actual));
for (i = 0; i < nb; i++) {
expected[i] =
pattern[(pattern_index +
i) % pattern_length];
if (!isprint(expected[i])) {
expected[i] = '.';
}
actual[i] = cp[i];
if (!isprint(actual[i])) {
actual[i] = '.';
}
}
ep +=
sprintf(ep,
" 1st %2d expected bytes: %s\n",
nb, expected);
ep +=
sprintf(ep,
" 1st %2d actual bytes: %s\n",
nb, actual);
fflush(stderr);
return errbuf;
} else {
cp++;
pattern_index++;
if (pattern_index == pattern_length) {
pattern_index = 0;
}
}
}
return errbuf;
}
return NULL;
}
/*
* Check the contents of a file beginning at offset, for length bytes. It
* is assumed that there is a string of pattern bytes in this area of the
* file. Use normal buffered reads to do the verification.
*
* If there is a data mismatch, write a detailed message into a static buffer
* suitable for the caller to print. Otherwise print NULL.
*
* The fsa flag is set to non-zero if the buffer should be read back through
* the FSA (unicos/mk). This implies the file will be opened
* O_PARALLEL|O_RAW|O_WELLFORMED to do the validation. We must do this because
* FSA will not allow the file to be opened for buffered io if it was
* previously opened for O_PARALLEL io.
*/
char *check_file(char *file, int offset, int length, char *pattern,
int pattern_length, int patshift, int fsa)
{
static char errbuf[4096];
int fd, nb, flags;
char *buf, *em, *ep;
#ifdef sgi
struct fd_cache *fdc;
#endif
buf = Memptr;
if (V_opt) {
flags = Validation_Flags | O_RDONLY;
} else {
flags = O_RDONLY;
if (fsa) {
#ifdef CRAY
flags |= O_PARALLEL | O_RAW | O_WELLFORMED;
#endif
}
}
if ((fd = alloc_fd(file, flags)) == -1) {
sprintf(errbuf,
"Could not open file %s with flags %#o (%s) for data comparison: %s (%d)\n",
file, flags, format_oflags(flags), SYSERR, errno);
return errbuf;
}
if (lseek(fd, offset, SEEK_SET) == -1) {
sprintf(errbuf,
"Could not lseek to offset %d in %s for verification: %s (%d)\n",
offset, file, SYSERR, errno);
return errbuf;
}
#ifdef sgi
/* Irix: Guarantee a properly aligned address on Direct I/O */
fdc = alloc_fdcache(file, flags);
if ((flags & O_DIRECT) && ((long)buf % fdc->c_memalign != 0)) {
buf += fdc->c_memalign - ((long)buf % fdc->c_memalign);
}
#endif
if ((nb = read(fd, buf, length)) == -1) {
#ifdef sgi
sprintf(errbuf,
"Could not read %d bytes from %s for verification: %s (%d)\n\tread(%d, 0x%lx, %d)\n\tbuf %% alignment(%d) = %ld\n",
length, file, SYSERR, errno,
fd, buf, length,
fdc->c_memalign, (long)buf % fdc->c_memalign);
#else
sprintf(errbuf,
"Could not read %d bytes from %s for verification: %s (%d)\n",
length, file, SYSERR, errno);
#endif
return errbuf;
}
if (nb != length) {
sprintf(errbuf,
"Read wrong # bytes from %s. Expected %d, got %d\n",
file, length, nb);
return errbuf;
}
if ((em =
(*Data_Check) (buf, offset, length, pattern, pattern_length,
patshift)) != NULL) {
ep = errbuf;
ep += sprintf(ep, "*** DATA COMPARISON ERROR ***\n");
ep +=
sprintf(ep, "check_file(%s, %d, %d, %s, %d, %d) failed\n\n",
file, offset, length, pattern, pattern_length,
patshift);
ep +=
sprintf(ep, "Comparison fd is %d, with open flags %#o\n",
fd, flags);
strcpy(ep, em);
return (errbuf);
}
return NULL;
}
/*
* Function to single-thread stdio output.
*/
int doio_fprintf(FILE * stream, char *format, ...)
{
static int pid = -1;
char *date;
int rval;
struct flock flk;
va_list arglist;
struct timeval ts;
gettimeofday(&ts, NULL);
date = hms(ts.tv_sec);
if (pid == -1) {
pid = getpid();
}
flk.l_whence = flk.l_start = flk.l_len = 0;
flk.l_type = F_WRLCK;
fcntl(fileno(stream), F_SETLKW, &flk);
va_start(arglist, format);
rval = fprintf(stream, "\n%s%s (%5d) %s\n", Prog, TagName, pid, date);
rval += fprintf(stream, "---------------------\n");
vfprintf(stream, format, arglist);
va_end(arglist);
fflush(stream);
flk.l_type = F_UNLCK;
fcntl(fileno(stream), F_SETLKW, &flk);
return rval;
}
/*
* Simple function for allocating core memory. Uses Memsize and Memptr to
* keep track of the current amount allocated.
*/
#ifndef CRAY
int alloc_mem(int nbytes)
{
char *cp;
void *addr;
int me = 0, flags, key, shmid;
static int mturn = 0; /* which memory type to use */
struct memalloc *M;
char filename[255];
#ifdef __linux__
struct shmid_ds shm_ds;
#endif
#ifdef __linux__
memset(&shm_ds, 0x00, sizeof(struct shmid_ds));
#endif
/* nbytes = -1 means "free all allocated memory" */
if (nbytes == -1) {
for (me = 0; me < Nmemalloc; me++) {
if (Memalloc[me].space == NULL)
continue;
switch (Memalloc[me].memtype) {
case MEM_DATA:
#ifdef sgi
if (Memalloc[me].flags & MEMF_MPIN)
munpin(Memalloc[me].space,
Memalloc[me].size);
#endif
free(Memalloc[me].space);
Memalloc[me].space = NULL;
Memptr = NULL;
Memsize = 0;
break;
case MEM_SHMEM:
#ifdef sgi
if (Memalloc[me].flags & MEMF_MPIN)
munpin(Memalloc[me].space,
Memalloc[me].size);
#endif
shmdt(Memalloc[me].space);
Memalloc[me].space = NULL;
#ifdef sgi
shmctl(Memalloc[me].fd, IPC_RMID);
#else
shmctl(Memalloc[me].fd, IPC_RMID, &shm_ds);
#endif
break;
case MEM_MMAP:
#ifdef sgi
if (Memalloc[me].flags & MEMF_MPIN)
munpin(Memalloc[me].space,
Memalloc[me].size);
#endif
munmap(Memalloc[me].space, Memalloc[me].size);
close(Memalloc[me].fd);
if (Memalloc[me].flags & MEMF_FILE) {
unlink(Memalloc[me].name);
}
Memalloc[me].space = NULL;
break;
default:
doio_fprintf(stderr,
"alloc_mem: HELP! Unknown memory space type %d index %d\n",
Memalloc[me].memtype, me);
break;
}
}
return 0;
}
/*
* Select a memory area (currently round-robbin)
*/
if (mturn >= Nmemalloc)
mturn = 0;
M = &Memalloc[mturn];
switch (M->memtype) {
case MEM_DATA:
if (nbytes > M->size) {
if (M->space != NULL) {
#ifdef sgi
if (M->flags & MEMF_MPIN)
munpin(M->space, M->size);
#endif
free(M->space);
}
M->space = NULL;
M->size = 0;
}
if (M->space == NULL) {
if ((cp = malloc(nbytes)) == NULL) {
doio_fprintf(stderr,
"malloc(%d) failed: %s (%d)\n",
nbytes, SYSERR, errno);
return -1;
}
#ifdef sgi
if (M->flags & MEMF_MPIN) {
if (mpin(cp, nbytes) == -1) {
doio_fprintf(stderr,
"mpin(0x%lx, %d) failed: %s (%d)\n",
cp, nbytes, SYSERR, errno);
}
}
#endif
M->space = (void *)cp;
M->size = nbytes;
}
break;
case MEM_MMAP:
if (nbytes > M->size) {
if (M->space != NULL) {
#ifdef sgi
if (M->flags & MEMF_MPIN)
munpin(M->space, M->size);
#endif
munmap(M->space, M->size);
close(M->fd);
if (M->flags & MEMF_FILE)
unlink(M->name);
}
M->space = NULL;
M->size = 0;
}
if (M->space == NULL) {
if (strchr(M->name, '%')) {
sprintf(filename, M->name, getpid());
M->name = strdup(filename);
}
if ((M->fd =
open(M->name, O_CREAT | O_RDWR, 0666)) == -1) {
doio_fprintf(stderr,
"alloc_mmap: error %d (%s) opening '%s'\n",
errno, SYSERR, M->name);
return (-1);
}
addr = NULL;
flags = 0;
M->size = nbytes * 4;
/* bias addr if MEMF_ADDR | MEMF_FIXADDR */
/* >>> how to pick a memory address? */
/* bias flags on MEMF_PRIVATE etc */
if (M->flags & MEMF_PRIVATE)
flags |= MAP_PRIVATE;
#ifdef sgi
if (M->flags & MEMF_LOCAL)
flags |= MAP_LOCAL;
if (M->flags & MEMF_AUTORESRV)
flags |= MAP_AUTORESRV;
if (M->flags & MEMF_AUTOGROW)
flags |= MAP_AUTOGROW;
#endif
if (M->flags & MEMF_SHARED)
flags |= MAP_SHARED;
/*printf("alloc_mem, about to mmap, fd=%d, name=(%s)\n", M->fd, M->name);*/
if ((M->space = mmap(addr, M->size,
PROT_READ | PROT_WRITE,
flags, M->fd, 0))
== MAP_FAILED) {
doio_fprintf(stderr,
"alloc_mem: mmap error. errno %d (%s)\n\tmmap(addr 0x%x, size %d, read|write 0x%x, mmap flags 0x%x [%#o], fd %d, 0)\n\tfile %s\n",
errno, SYSERR, addr, M->size,
PROT_READ | PROT_WRITE, flags,
M->flags, M->fd, M->name);
doio_fprintf(stderr, "\t%s%s%s%s%s",
(flags & MAP_PRIVATE) ? "private "
: "",
#ifdef sgi
(flags & MAP_LOCAL) ? "local " :
"",
(flags & MAP_AUTORESRV) ?
"autoresrv " : "",
(flags & MAP_AUTOGROW) ?
"autogrow " : "",
#endif
(flags & MAP_SHARED) ? "shared" :
"");
return (-1);
}
}
break;
case MEM_SHMEM:
if (nbytes > M->size) {
if (M->space != NULL) {
#ifdef sgi
if (M->flags & MEMF_MPIN)
munpin(M->space, M->size);
#endif
shmdt(M->space);
#ifdef sgi
shmctl(M->fd, IPC_RMID);
#else
shmctl(M->fd, IPC_RMID, &shm_ds);
#endif
}
M->space = NULL;
M->size = 0;
}
if (M->space == NULL) {
if (!strcmp(M->name, "private")) {
key = IPC_PRIVATE;
} else {
sscanf(M->name, "%i", &key);
}
M->size = M->nblks ? M->nblks * 512 : nbytes;
if (nbytes > M->size) {
#ifdef DEBUG
doio_fprintf(stderr,
"MEM_SHMEM: nblks(%d) too small: nbytes=%d Msize=%d, skipping this req.\n",
M->nblks, nbytes, M->size);
#endif
return SKIP_REQ;
}
shmid = shmget(key, M->size, IPC_CREAT | 0666);
if (shmid == -1) {
doio_fprintf(stderr,
"shmget(0x%x, %d, CREAT) failed: %s (%d)\n",
key, M->size, SYSERR, errno);
return (-1);
}
M->fd = shmid;
M->space = shmat(shmid, NULL, SHM_RND);
if (M->space == (void *)-1) {
doio_fprintf(stderr,
"shmat(0x%x, NULL, SHM_RND) failed: %s (%d)\n",
shmid, SYSERR, errno);
return (-1);
}
#ifdef sgi
if (M->flags & MEMF_MPIN) {
if (mpin(M->space, M->size) == -1) {
doio_fprintf(stderr,
"mpin(0x%lx, %d) failed: %s (%d)\n",
M->space, M->size, SYSERR,
errno);
}
}
#endif
}
break;
default:
doio_fprintf(stderr,
"alloc_mem: HELP! Unknown memory space type %d index %d\n",
Memalloc[me].memtype, mturn);
break;
}
Memptr = M->space;
Memsize = M->size;
mturn++;
return 0;
}
#else /* CRAY */
int alloc_mem(int nbytes)
{
char *cp;
int ip;
static char *malloc_space;
/*
* The "unicos" version of this did some stuff with sbrk;
* this caused problems with async I/O on irix, and now appears
* to be causing problems with FSA I/O on unicos/mk.
*/
#ifdef NOTDEF
if (nbytes > Memsize) {
if ((cp = (char *)sbrk(nbytes - Memsize)) == (char *)-1) {
doio_fprintf(stderr, "sbrk(%d) failed: %s (%d)\n",
nbytes - Memsize, SYSERR, errno);
return -1;
}
if (Memsize == 0)
Memptr = cp;
Memsize += nbytes - Memsize;
}
#else
/* nbytes = -1 means "free all allocated memory" */
if (nbytes == -1) {
free(malloc_space);
Memptr = NULL;
Memsize = 0;
return 0;
}
if (nbytes > Memsize) {
if (Memsize != 0)
free(malloc_space);
if ((cp = malloc_space = malloc(nbytes)) == NULL) {
doio_fprintf(stderr, "malloc(%d) failed: %s (%d)\n",
nbytes, SYSERR, errno);
return -1;
}
#ifdef _CRAYT3E
/* T3E requires memory to be aligned on 0x40 word boundaries */
ip = (int)cp;
if (ip & 0x3F != 0) {
doio_fprintf(stderr,
"malloc(%d) = 0x%x(0x%x) not aligned by 0x%x\n",
nbytes, cp, ip, ip & 0x3f);
free(cp);
if ((cp = malloc_space = malloc(nbytes + 0x40)) == NULL) {
doio_fprintf(stderr,
"malloc(%d) failed: %s (%d)\n",
nbytes, SYSERR, errno);
return -1;
}
ip = (int)cp;
cp += (0x40 - (ip & 0x3F));
}
#endif /* _CRAYT3E */
Memptr = cp;
Memsize = nbytes;
}
#endif /* NOTDEF */
return 0;
}
#endif /* CRAY */
/*
* Simple function for allocating sds space. Uses Sdssize and Sdsptr to
* keep track of location and size of currently allocated chunk.
*/
#ifdef _CRAY1
int alloc_sds(int nbytes)
{
int nblks;
if (nbytes > Sdssize) {
if ((nblks = ssbreak(btoc(nbytes - Sdssize))) == -1) {
doio_fprintf(stderr, "ssbreak(%d) failed: %s (%d)\n",
btoc(nbytes - Sdssize), SYSERR, errno);
return -1;
}
Sdssize = ctob(nblks);
Sdsptr = 0;
}
return 0;
}
#else
#ifdef CRAY
int alloc_sds(int nbytes)
{
doio_fprintf(stderr,
"Internal Error - alloc_sds() called on a CRAY2 system\n");
alloc_mem(-1);
exit(E_INTERNAL);
}
#endif
#endif /* _CRAY1 */
/*
* Function to maintain a file descriptor cache, so that doio does not have
* to do so many open() and close() calls. Descriptors are stored in the
* cache by file name, and open flags. Each entry also has a _rtc value
* associated with it which is used in aging. If doio cannot open a file
* because it already has too many open (ie. system limit hit) it will close
* the one in the cache that has the oldest _rtc value.
*
* If alloc_fd() is called with a file of NULL, it will close all descriptors
* in the cache, and free the memory in the cache.
*/
int alloc_fd(char *file, int oflags)
{
struct fd_cache *fdc;
struct fd_cache *alloc_fdcache(char *file, int oflags);
fdc = alloc_fdcache(file, oflags);
if (fdc != NULL)
return (fdc->c_fd);
else
return (-1);
}
struct fd_cache *alloc_fdcache(char *file, int oflags)
{
int fd;
struct fd_cache *free_slot, *oldest_slot, *cp;
static int cache_size = 0;
static struct fd_cache *cache = NULL;
#ifdef sgi
struct dioattr finfo;
#endif
/*
* If file is NULL, it means to free up the fd cache.
*/
if (file == NULL && cache != NULL) {
for (cp = cache; cp < &cache[cache_size]; cp++) {
if (cp->c_fd != -1) {
close(cp->c_fd);
}
#ifndef CRAY
if (cp->c_memaddr != NULL) {
munmap(cp->c_memaddr, cp->c_memlen);
}
#endif
}
free(cache);
cache = NULL;
cache_size = 0;
return 0;
}
free_slot = NULL;
oldest_slot = NULL;
/*
* Look for a fd in the cache. If one is found, return it directly.
* Otherwise, when this loop exits, oldest_slot will point to the
* oldest fd slot in the cache, and free_slot will point to an
* unoccupied slot if there are any.
*/
for (cp = cache; cp != NULL && cp < &cache[cache_size]; cp++) {
if (cp->c_fd != -1 &&
cp->c_oflags == oflags && strcmp(cp->c_file, file) == 0) {
#ifdef CRAY
cp->c_rtc = _rtc();
#else
cp->c_rtc = Reqno;
#endif
return cp;
}
if (cp->c_fd == -1) {
if (free_slot == NULL) {
free_slot = cp;
}
} else {
if (oldest_slot == NULL ||
cp->c_rtc < oldest_slot->c_rtc) {
oldest_slot = cp;
}
}
}
/*
* No matching file/oflags pair was found in the cache. Attempt to
* open a new fd.
*/
if ((fd = open(file, oflags, 0666)) < 0) {
if (errno != EMFILE) {
doio_fprintf(stderr,
"Could not open file %s with flags %#o (%s): %s (%d)\n",
file, oflags, format_oflags(oflags),
SYSERR, errno);
alloc_mem(-1);
exit(E_SETUP);
}
/*
* If we get here, we have as many open fd's as we can have.
* Close the oldest one in the cache (pointed to by
* oldest_slot), and attempt to re-open.
*/
close(oldest_slot->c_fd);
oldest_slot->c_fd = -1;
free_slot = oldest_slot;
if ((fd = open(file, oflags, 0666)) < 0) {
doio_fprintf(stderr,
"Could not open file %s with flags %#o (%s): %s (%d)\n",
file, oflags, format_oflags(oflags),
SYSERR, errno);
alloc_mem(-1);
exit(E_SETUP);
}
}
/*printf("alloc_fd: new file %s flags %#o fd %d\n", file, oflags, fd);*/
/*
* If we get here, fd is our open descriptor. If free_slot is NULL,
* we need to grow the cache, otherwise free_slot is the slot that
* should hold the fd info.
*/
if (free_slot == NULL) {
cache =
(struct fd_cache *)realloc(cache,
sizeof(struct fd_cache) *
(FD_ALLOC_INCR + cache_size));
if (cache == NULL) {
doio_fprintf(stderr,
"Could not malloc() space for fd chace");
alloc_mem(-1);
exit(E_SETUP);
}
cache_size += FD_ALLOC_INCR;
for (cp = &cache[cache_size - FD_ALLOC_INCR];
cp < &cache[cache_size]; cp++) {
cp->c_fd = -1;
}
free_slot = &cache[cache_size - FD_ALLOC_INCR];
}
/*
* finally, fill in the cache slot info
*/
free_slot->c_fd = fd;
free_slot->c_oflags = oflags;
strcpy(free_slot->c_file, file);
#ifdef CRAY
free_slot->c_rtc = _rtc();
#else
free_slot->c_rtc = Reqno;
#endif
#ifdef sgi
if (oflags & O_DIRECT) {
if (fcntl(fd, F_DIOINFO, &finfo) == -1) {
finfo.d_mem = 1;
finfo.d_miniosz = 1;
finfo.d_maxiosz = 1;
}
} else {
finfo.d_mem = 1;
finfo.d_miniosz = 1;
finfo.d_maxiosz = 1;
}
free_slot->c_memalign = finfo.d_mem;
free_slot->c_miniosz = finfo.d_miniosz;
free_slot->c_maxiosz = finfo.d_maxiosz;
#endif /* sgi */
#ifndef CRAY
free_slot->c_memaddr = NULL;
free_slot->c_memlen = 0;
#endif
return free_slot;
}
/*
*
* Signal Handling Section
*
*
*/
#ifdef sgi
/*
* "caller-id" for signals
*/
void signal_info(int sig, siginfo_t * info, void *v)
{
int haveit = 0;
if (info != NULL) {
switch (info->si_code) {
case SI_USER:
doio_fprintf(stderr,
"signal_info: si_signo %d si_errno %d si_code SI_USER pid %d uid %d\n",
info->si_signo, info->si_errno,
info->si_pid, info->si_uid);
haveit = 1;
break;
case SI_QUEUE:
doio_fprintf(stderr,
"signal_info si_signo %d si_code = SI_QUEUE\n",
info->si_signo);
haveit = 1;
break;
}
if (!haveit) {
if ((info->si_signo == SIGSEGV) ||
(info->si_signo == SIGBUS)) {
doio_fprintf(stderr,
"signal_info si_signo %d si_errno %d si_code = %d si_addr=%p active_mmap_rw=%d havesigint=%d\n",
info->si_signo, info->si_errno,
info->si_code, info->si_addr,
active_mmap_rw, havesigint);
haveit = 1;
}
}
if (!haveit) {
doio_fprintf(stderr,
"signal_info: si_signo %d si_errno %d unknown code %d\n",
info->si_signo, info->si_errno,
info->si_code);
}
} else {
doio_fprintf(stderr, "signal_info: sig %d\n", sig);
}
}
void cleanup_handler(int sig, siginfo_t * info, void *v)
{
havesigint = 1; /* in case there's a followup signal */
/*signal_info(sig, info, v); *//* be quiet on "normal" kill */
alloc_mem(-1);
exit(0);
}
void die_handler(int sig, siginfo_t * info, void *v)
{
doio_fprintf(stderr, "terminating on signal %d\n", sig);
signal_info(sig, info, v);
alloc_mem(-1);
exit(1);
}
void sigbus_handler(int sig, siginfo_t * info, void *v)
{
/* While we are doing a memcpy to/from an mmapped region we can
get a SIGBUS for a variety of reasons--and not all of them
should be considered failures.
Under normal conditions if we get a SIGINT it means we've been
told to shutdown. However, if we're currently doing the above-
mentioned memcopy then the kernel will follow that SIGINT with
a SIGBUS. We can guess that we're in this situation by seeing
that the si_errno field in the siginfo structure has EINTR as
an errno. (We might make the guess stronger by looking at the
si_addr field to see that it's not faulting off the end of the
mmapped region, but it seems that in such a case havesigint
would not have been set so maybe that doesn't make the guess
stronger.)
*/
if (active_mmap_rw && havesigint && (info->si_errno == EINTR)) {
cleanup_handler(sig, info, v);
} else {
die_handler(sig, info, v);
}
}
#else
void cleanup_handler(int sig)
{
havesigint = 1; /* in case there's a followup signal */
alloc_mem(-1);
exit(0);
}
void die_handler(int sig)
{
doio_fprintf(stderr, "terminating on signal %d\n", sig);
alloc_mem(-1);
exit(1);
}
#ifndef CRAY
void sigbus_handler(int sig)
{
/* See sigbus_handler() in the 'ifdef sgi' case for details. Here,
we don't have the siginfo stuff so the guess is weaker but we'll
do it anyway.
*/
if (active_mmap_rw && havesigint)
cleanup_handler(sig);
else
die_handler(sig);
}
#endif /* !CRAY */
#endif /* sgi */
void noop_handler(int sig)
{
return;
}
/*
* SIGINT handler for the parent (original doio) process. It simply sends
* a SIGINT to all of the doio children. Since they're all in the same
* pgrp, this can be done with a single kill().
*/
void sigint_handler(int sig)
{
int i;
for (i = 0; i < Nchildren; i++) {
if (Children[i] != -1) {
kill(Children[i], SIGINT);
}
}
}
/*
* Signal handler used to inform a process when async io completes. Referenced
* in do_read() and do_write(). Note that the signal handler is not
* re-registered.
*/
void aio_handler(int sig)
{
unsigned int i;
struct aio_info *aiop;
for (i = 0; i < sizeof(Aio_Info) / sizeof(Aio_Info[0]); i++) {
aiop = &Aio_Info[i];
if (aiop->strategy == A_SIGNAL && aiop->sig == sig) {
aiop->signalled++;
if (aio_done(aiop)) {
aiop->done++;
}
}
}
}
/*
* dump info on all open aio slots
*/
void dump_aio(void)
{
unsigned int i, count;
count = 0;
for (i = 0; i < sizeof(Aio_Info) / sizeof(Aio_Info[0]); i++) {
if (Aio_Info[i].busy) {
count++;
fprintf(stderr,
"Aio_Info[%03d] id=%d fd=%d signal=%d signaled=%d\n",
i, Aio_Info[i].id,
Aio_Info[i].fd,
Aio_Info[i].sig, Aio_Info[i].signalled);
fprintf(stderr, "\tstrategy=%s\n",
format_strat(Aio_Info[i].strategy));
}
}
fprintf(stderr, "%d active async i/os\n", count);
}
#ifdef sgi
/*
* Signal handler called as a callback, not as a signal.
* 'val' is the value from sigev_value and is assumed to be the
* Aio_Info[] index.
*/
void cb_handler(sigval_t val)
{
struct aio_info *aiop;
/*printf("cb_handler requesting slot %d\n", val.sival_int);*/
aiop = aio_slot(val.sival_int);
/*printf("cb_handler, aiop=%p\n", aiop);*/
/*printf("%d in cb_handler\n", getpid() );*/
if (aiop->strategy == A_CALLBACK) {
aiop->signalled++;
if (aio_done(aiop)) {
aiop->done++;
}
}
}
#endif
struct aio_info *aio_slot(int aio_id)
{
unsigned int i;
static int id = 1;
struct aio_info *aiop;
aiop = NULL;
for (i = 0; i < sizeof(Aio_Info) / sizeof(Aio_Info[0]); i++) {
if (aio_id == -1) {
if (!Aio_Info[i].busy) {
aiop = &Aio_Info[i];
aiop->busy = 1;
aiop->id = id++;
break;
}
} else {
if (Aio_Info[i].busy && Aio_Info[i].id == aio_id) {
aiop = &Aio_Info[i];
break;
}
}
}
if (aiop == NULL) {
doio_fprintf(stderr, "aio_slot(%d) not found. Request %d\n",
aio_id, Reqno);
dump_aio();
alloc_mem(-1);
exit(E_INTERNAL);
}
return aiop;
}
int aio_register(int fd, int strategy, int sig)
{
struct aio_info *aiop;
struct sigaction sa;
aiop = aio_slot(-1);
aiop->fd = fd;
aiop->strategy = strategy;
aiop->done = 0;
#ifdef CRAY
memset((char *)&aiop->iosw, 0x00, sizeof(aiop->iosw));
#endif
if (strategy == A_SIGNAL) {
aiop->sig = sig;
aiop->signalled = 0;
sa.sa_handler = aio_handler;
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
sigaction(sig, &sa, &aiop->osa);
} else {
aiop->sig = -1;
aiop->signalled = 0;
}
return aiop->id;
}
int aio_unregister(int aio_id)
{
struct aio_info *aiop;
aiop = aio_slot(aio_id);
if (aiop->strategy == A_SIGNAL) {
sigaction(aiop->sig, &aiop->osa, NULL);
}
aiop->busy = 0;
return 0;
}
#ifndef __linux__
int aio_wait(int aio_id)
{
#ifdef RECALL_SIZEOF
long mask[RECALL_SIZEOF];
#endif
sigset_t signalset;
struct aio_info *aiop;
#ifdef CRAY
struct iosw *ioswlist[1];
#endif
#ifdef sgi
const aiocb_t *aioary[1];
#endif
int r, cnt;
aiop = aio_slot(aio_id);
/*printf("%d aiop B =%p\n", getpid(), aiop);*/
switch (aiop->strategy) {
case A_POLL:
while (!aio_done(aiop)) ;
break;
case A_SIGNAL:
sigemptyset(&signalset);
sighold(aiop->sig);
while (!aiop->signalled || !aiop->done) {
sigsuspend(&signalset);
sighold(aiop->sig);
}
break;
#ifdef CRAY
case A_RECALL:
ioswlist[0] = &aiop->iosw;
if (recall(aiop->fd, 1, ioswlist) < 0) {
doio_fprintf(stderr, "recall() failed: %s (%d)\n",
SYSERR, errno);
exit(E_SETUP);
}
break;
#ifdef RECALL_SIZEOF
case A_RECALLA:
RECALL_INIT(mask);
RECALL_SET(mask, aiop->fd);
if (recalla(mask) < 0) {
doio_fprintf(stderr, "recalla() failed: %s (%d)\n",
SYSERR, errno);
exit(E_SETUP);
}
RECALL_CLR(mask, aiop->fd);
break;
#endif
case A_RECALLS:
ioswlist[0] = &aiop->iosw;
if (recalls(1, ioswlist) < 0) {
doio_fprintf(stderr, "recalls failed: %s (%d)\n",
SYSERR, errno);
exit(E_SETUP);
}
break;
#endif /* CRAY */
#ifdef sgi
case A_CALLBACK:
aioary[0] = &aiop->aiocb;
cnt = 0;
do {
r = aio_suspend(aioary, 1, NULL);
if (r == -1) {
doio_fprintf(stderr,
"aio_suspend failed: %s (%d)\n",
SYSERR, errno);
exit(E_SETUP);
}
cnt++;
} while (aiop->done == 0);
#if 0
/*
* after having this set for a while, I've decided that
* it's too noisy
*/
if (cnt > 1)
doio_fprintf(stderr,
"aio_wait: callback wait took %d tries\n",
cnt);
#endif
/*
* Note: cb_handler already calls aio_done
*/
break;
case A_SUSPEND:
aioary[0] = &aiop->aiocb;
r = aio_suspend(aioary, 1, NULL);
if (r == -1) {
doio_fprintf(stderr, "aio_suspend failed: %s (%d)\n",
SYSERR, errno);
exit(E_SETUP);
}
aio_done(aiop);
break;
#endif
}
/*printf("aio_wait: errno %d return %d\n", aiop->aio_errno, aiop->aio_ret);*/
return 0;
}
#endif /* !linux */
/*
* Format specified time into HH:MM:SS format. t is the time to format
* in seconds (as returned from time(2)).
*/
char *hms(time_t t)
{
static char ascii_time[9];
struct tm *ltime;
ltime = localtime(&t);
strftime(ascii_time, sizeof(ascii_time), "%H:%M:%S", ltime);
return ascii_time;
}
/*
* Simple routine to check if an async io request has completed.
*/
int aio_done(struct aio_info *ainfo)
{
#ifdef CRAY
return ainfo->iosw.sw_flag;
#endif
#ifdef sgi
if ((ainfo->aio_errno = aio_error(&ainfo->aiocb)) == -1) {
doio_fprintf(stderr, "aio_done: aio_error failed: %s (%d)\n",
SYSERR, errno);
exit(E_SETUP);
}
/*printf("%d aio_done aio_errno=%d\n", getpid(), ainfo->aio_errno); */
if (ainfo->aio_errno != EINPROGRESS) {
if ((ainfo->aio_ret = aio_return(&ainfo->aiocb)) == -1) {
doio_fprintf(stderr,
"aio_done: aio_return failed: %s (%d)\n",
SYSERR, errno);
exit(E_SETUP);
}
}
return (ainfo->aio_errno != EINPROGRESS);
#else
return -1; /* invalid */
#endif
}
/*
* Routine to handle upanic() - it first attempts to set the panic flag. If
* the flag cannot be set, an error message is issued. A call to upanic
* with PA_PANIC is then done unconditionally, in case the panic flag was set
* from outside the program (as with the panic(8) program).
*
* Note - we only execute the upanic code if -U was used, and the passed in
* mask is set in the Upanic_Conditions bitmask.
*/
void doio_upanic(int mask)
{
if (U_opt == 0 || (mask & Upanic_Conditions) == 0) {
return;
}
#ifdef CRAY
if (upanic(PA_SET) < 0) {
doio_fprintf(stderr,
"WARNING - Could not set the panic flag - upanic(PA_SET) failed: %s (%d)\n",
SYSERR, errno);
}
upanic(PA_PANIC);
#endif
#ifdef sgi
syssgi(1005); /* syssgi test panic - DEBUG kernels only */
#endif
doio_fprintf(stderr, "WARNING - upanic() failed\n");
}
/*
* Parse cmdline options/arguments and set appropriate global variables.
* If the cmdline is valid, return 0 to caller. Otherwise exit with a status
* of 1.
*/
int parse_cmdline(int argc, char **argv, char *opts)
{
int c;
char cc, *cp = NULL, *tok = NULL;
extern int opterr;
extern int optind;
extern char *optarg;
struct smap *s;
char *memargs[NMEMALLOC];
int nmemargs, ma;
if (*argv[0] == '-') {
argv[0]++;
Execd = 1;
}
if ((Prog = strrchr(argv[0], '/')) == NULL) {
Prog = argv[0];
} else {
Prog++;
}
opterr = 0;
while ((c = getopt(argc, argv, opts)) != EOF) {
switch ((char)c) {
case 'a':
a_opt++;
break;
case 'C':
C_opt++;
for (s = checkmap; s->string != NULL; s++)
if (!strcmp(s->string, optarg))
break;
if (s->string == NULL && tok != NULL) {
fprintf(stderr,
"%s%s: Illegal -C arg (%s). Must be one of: ",
Prog, TagName, tok);
for (s = checkmap; s->string != NULL; s++)
fprintf(stderr, "%s ", s->string);
fprintf(stderr, "\n");
exit(1);
}
switch (s->value) {
case C_DEFAULT:
Data_Fill = doio_pat_fill;
Data_Check = doio_pat_check;
break;
default:
fprintf(stderr,
"%s%s: Unrecognised -C arg '%s' %d",
Prog, TagName, s->string, s->value);
exit(1);
}
break;
case 'd': /* delay between i/o ops */
parse_delay(optarg);
break;
case 'e':
if (Npes > 1 && Nprocs > 1) {
fprintf(stderr,
"%s%s: Warning - Program is a multi-pe application - exec option is ignored.\n",
Prog, TagName);
}
e_opt++;
break;
case 'h':
help(stdout);
exit(0);
break;
case 'k':
k_opt++;
break;
case 'm':
Message_Interval = strtol(optarg, &cp, 10);
if (*cp != '\0' || Message_Interval < 0) {
fprintf(stderr,
"%s%s: Illegal -m arg (%s): Must be an integer >= 0\n",
Prog, TagName, optarg);
exit(1);
}
m_opt++;
break;
case 'M': /* memory allocation types */
#ifndef CRAY
nmemargs = string_to_tokens(optarg, memargs, 32, ",");
for (ma = 0; ma < nmemargs; ma++) {
parse_memalloc(memargs[ma]);
}
/*dump_memalloc(); */
#else
fprintf(stderr,
"%s%s: Error: -M isn't supported on this platform\n",
Prog, TagName);
exit(1);
#endif
M_opt++;
break;
case 'N':
sprintf(TagName, "(%.39s)", optarg);
break;
case 'n':
Nprocs = strtol(optarg, &cp, 10);
if (*cp != '\0' || Nprocs < 1) {
fprintf(stderr,
"%s%s: Illegal -n arg (%s): Must be integer > 0\n",
Prog, TagName, optarg);
exit(E_USAGE);
}
if (Npes > 1 && Nprocs > 1) {
fprintf(stderr,
"%s%s: Program has been built as a multi-pe app. -n1 is the only nprocs value allowed\n",
Prog, TagName);
exit(E_SETUP);
}
n_opt++;
break;
case 'r':
Release_Interval = strtol(optarg, &cp, 10);
if (*cp != '\0' || Release_Interval < 0) {
fprintf(stderr,
"%s%s: Illegal -r arg (%s): Must be integer >= 0\n",
Prog, TagName, optarg);
exit(E_USAGE);
}
r_opt++;
break;
case 'w':
Write_Log = optarg;
w_opt++;
break;
case 'v':
v_opt++;
break;
case 'V':
if (strcasecmp(optarg, "sync") == 0) {
Validation_Flags = O_SYNC;
} else if (strcasecmp(optarg, "buffered") == 0) {
Validation_Flags = 0;
#ifdef CRAY
} else if (strcasecmp(optarg, "parallel") == 0) {
Validation_Flags = O_PARALLEL;
} else if (strcasecmp(optarg, "ldraw") == 0) {
Validation_Flags = O_LDRAW;
} else if (strcasecmp(optarg, "raw") == 0) {
Validation_Flags = O_RAW;
#endif
#ifdef sgi
} else if (strcasecmp(optarg, "direct") == 0) {
Validation_Flags = O_DIRECT;
#endif
} else {
if (sscanf
(optarg, "%i%c", &Validation_Flags,
&cc) != 1) {
fprintf(stderr,
"%s: Invalid -V argument (%s) - must be a decimal, hex, or octal\n",
Prog, optarg);
fprintf(stderr,
" number, or one of the following strings: 'sync',\n");
fprintf(stderr,
" 'buffered', 'parallel', 'ldraw', or 'raw'\n");
exit(E_USAGE);
}
}
V_opt++;
break;
case 'U':
tok = strtok(optarg, ",");
while (tok != NULL) {
for (s = Upanic_Args; s->string != NULL; s++)
if (strcmp(s->string, tok) == 0)
break;
if (s->string == NULL) {
fprintf(stderr,
"%s%s: Illegal -U arg (%s). Must be one of: ",
Prog, TagName, tok);
for (s = Upanic_Args; s->string != NULL;
s++)
fprintf(stderr, "%s ",
s->string);
fprintf(stderr, "\n");
exit(1);
}
Upanic_Conditions |= s->value;
tok = strtok(NULL, ",");
}
U_opt++;
break;
case '?':
usage(stderr);
exit(E_USAGE);
break;
}
}
/*
* Supply defaults
*/
if (!C_opt) {
Data_Fill = doio_pat_fill;
Data_Check = doio_pat_check;
}
if (!U_opt)
Upanic_Conditions = 0;
if (!n_opt)
Nprocs = 1;
if (!r_opt)
Release_Interval = DEF_RELEASE_INTERVAL;
if (!M_opt) {
Memalloc[Nmemalloc].memtype = MEM_DATA;
Memalloc[Nmemalloc].flags = 0;
Memalloc[Nmemalloc].name = NULL;
Memalloc[Nmemalloc].space = NULL;
Nmemalloc++;
}
/*
* Initialize input stream
*/
if (argc == optind) {
Infile = NULL;
} else {
Infile = argv[optind++];
}
if (argc != optind) {
usage(stderr);
exit(E_USAGE);
}
return 0;
}
/*
* Parse memory allocation types
*
* Types are:
* Data
* T3E-shmem:blksize[:nblks]
* SysV-shmem:shmid:blksize:nblks
* if shmid is "private", use IPC_PRIVATE
* and nblks is not required
*
* mmap:flags:filename:blksize[:nblks]
* flags are one of:
* p - private (MAP_PRIVATE)
* a - private, MAP_AUTORESRV
* l - local (MAP_LOCAL)
* s - shared (nblks required)
*
* plus any of:
* f - fixed address (MAP_FIXED)
* A - use an address without MAP_FIXED
* a - autogrow (map once at startup)
*
* mmap:flags:devzero
* mmap /dev/zero (shared not allowd)
* maps the first 4096 bytes of /dev/zero
*
* - put a directory at the beginning of the shared
* regions saying what pid has what region.
* DIRMAGIC
* BLKSIZE
* NBLKS
* nblks worth of directories - 1 int pids
*/
#ifndef CRAY
void parse_memalloc(char *arg)
{
char *allocargs[NMEMALLOC];
int nalloc;
struct memalloc *M;
if (Nmemalloc >= NMEMALLOC) {
doio_fprintf(stderr, "Error - too many memory types (%d).\n",
Nmemalloc);
return;
}
M = &Memalloc[Nmemalloc];
nalloc = string_to_tokens(arg, allocargs, 32, ":");
if (!strcmp(allocargs[0], "data")) {
M->memtype = MEM_DATA;
M->flags = 0;
M->name = NULL;
M->space = NULL;
Nmemalloc++;
if (nalloc >= 2) {
if (strchr(allocargs[1], 'p'))
M->flags |= MEMF_MPIN;
}
} else if (!strcmp(allocargs[0], "mmap")) {
/* mmap:flags:filename[:size] */
M->memtype = MEM_MMAP;
M->flags = 0;
M->space = NULL;
if (nalloc >= 1) {
if (strchr(allocargs[1], 'p'))
M->flags |= MEMF_PRIVATE;
if (strchr(allocargs[1], 'a'))
M->flags |= MEMF_AUTORESRV;
if (strchr(allocargs[1], 'l'))
M->flags |= MEMF_LOCAL;
if (strchr(allocargs[1], 's'))
M->flags |= MEMF_SHARED;
if (strchr(allocargs[1], 'f'))
M->flags |= MEMF_FIXADDR;
if (strchr(allocargs[1], 'A'))
M->flags |= MEMF_ADDR;
if (strchr(allocargs[1], 'G'))
M->flags |= MEMF_AUTOGROW;
if (strchr(allocargs[1], 'U'))
M->flags |= MEMF_FILE;
} else {
M->flags |= MEMF_PRIVATE;
}
if (nalloc > 2) {
if (!strcmp(allocargs[2], "devzero")) {
M->name = "/dev/zero";
if (M->flags &
((MEMF_PRIVATE | MEMF_LOCAL) == 0))
M->flags |= MEMF_PRIVATE;
} else {
M->name = allocargs[2];
}
} else {
M->name = "/dev/zero";
if (M->flags & ((MEMF_PRIVATE | MEMF_LOCAL) == 0))
M->flags |= MEMF_PRIVATE;
}
Nmemalloc++;
} else if (!strcmp(allocargs[0], "shmem")) {
/* shmem:shmid:size */
M->memtype = MEM_SHMEM;
M->flags = 0;
M->space = NULL;
if (nalloc >= 2) {
M->name = allocargs[1];
} else {
M->name = NULL;
}
if (nalloc >= 3) {
sscanf(allocargs[2], "%i", &M->nblks);
} else {
M->nblks = 0;
}
if (nalloc >= 4) {
if (strchr(allocargs[3], 'p'))
M->flags |= MEMF_MPIN;
}
Nmemalloc++;
} else {
doio_fprintf(stderr, "Error - unknown memory type '%s'.\n",
allocargs[0]);
exit(1);
}
}
void dump_memalloc(void)
{
int ma;
char *mt;
if (Nmemalloc == 0) {
printf("No memory allocation strategies devined\n");
return;
}
for (ma = 0; ma < Nmemalloc; ma++) {
switch (Memalloc[ma].memtype) {
case MEM_DATA:
mt = "data";
break;
case MEM_SHMEM:
mt = "shmem";
break;
case MEM_MMAP:
mt = "mmap";
break;
default:
mt = "unknown";
break;
}
printf("mstrat[%d] = %d %s\n", ma, Memalloc[ma].memtype, mt);
printf("\tflags=%#o name='%s' nblks=%d\n",
Memalloc[ma].flags,
Memalloc[ma].name, Memalloc[ma].nblks);
}
}
#endif /* !CRAY */
/*
* -d <op>:<time> - doio inter-operation delay
* currently this permits ONE type of delay between operations.
*/
void parse_delay(char *arg)
{
char *delayargs[NMEMALLOC];
int ndelay;
struct smap *s;
ndelay = string_to_tokens(arg, delayargs, 32, ":");
if (ndelay < 2) {
doio_fprintf(stderr,
"Illegal delay arg (%s). Must be operation:time\n",
arg);
exit(1);
}
for (s = delaymap; s->string != NULL; s++)
if (!strcmp(s->string, delayargs[0]))
break;
if (s->string == NULL) {
fprintf(stderr,
"Illegal Delay arg (%s). Must be one of: ", arg);
for (s = delaymap; s->string != NULL; s++)
fprintf(stderr, "%s ", s->string);
fprintf(stderr, "\n");
exit(1);
}
delayop = s->value;
sscanf(delayargs[1], "%i", &delaytime);
if (ndelay > 2) {
fprintf(stderr, "Warning: extra delay arguments ignored.\n");
}
}
/*
* Usage clause - obvious
*/
int usage(FILE * stream)
{
/*
* Only do this if we are on vpe 0, to avoid seeing it from every
* process in the application.
*/
if (Npes > 1 && Vpe != 0) {
return 0;
}
fprintf(stream,
"usage%s: %s [-aekv] [-m message_interval] [-n nprocs] [-r release_interval] [-w write_log] [-V validation_ftype] [-U upanic_cond] [infile]\n",
TagName, Prog);
return 0;
}
void help(FILE * stream)
{
/*
* Only the app running on vpe 0 gets to issue help - this prevents
* everybody in the application from doing this.
*/
if (Npes > 1 && Vpe != 0) {
return;
}
usage(stream);
fprintf(stream, "\n");
fprintf(stream,
"\t-a abort - kill all doio processes on data compare\n");
fprintf(stream,
"\t errors. Normally only the erroring process exits\n");
fprintf(stream, "\t-C data-pattern-type \n");
fprintf(stream,
"\t Available data patterns are:\n");
fprintf(stream, "\t default - repeating pattern\n");
fprintf(stream, "\t-d Operation:Time Inter-operation delay.\n");
fprintf(stream, "\t Operations are:\n");
fprintf(stream,
"\t select:time (1 second=1000000)\n");
fprintf(stream, "\t sleep:time (1 second=1)\n");
#ifdef sgi
fprintf(stream,
"\t sginap:time (1 second=CLK_TCK=100)\n");
#endif
fprintf(stream, "\t alarm:time (1 second=1)\n");
fprintf(stream,
"\t-e Re-exec children before entering the main\n");
fprintf(stream,
"\t loop. This is useful for spreading\n");
fprintf(stream,
"\t procs around on multi-pe systems.\n");
fprintf(stream,
"\t-k Lock file regions during writes using fcntl()\n");
fprintf(stream,
"\t-v Verify writes - this is done by doing a buffered\n");
fprintf(stream,
"\t read() of the data if file io was done, or\n");
fprintf(stream,
"\t an ssread()of the data if sds io was done\n");
#ifndef CRAY
fprintf(stream,
"\t-M Data buffer allocation method\n");
fprintf(stream, "\t alloc-type[,type]\n");
#ifdef sgi
fprintf(stream, "\t data:flags\n");
fprintf(stream, "\t p - mpin buffer\n");
fprintf(stream, "\t shmem:shmid:size:flags\n");
fprintf(stream, "\t p - mpin buffer\n");
#else
fprintf(stream, "\t data\n");
fprintf(stream, "\t shmem:shmid:size\n");
#endif /* sgi */
fprintf(stream, "\t mmap:flags:filename\n");
fprintf(stream, "\t p - private\n");
#ifdef sgi
fprintf(stream, "\t s - shared\n");
fprintf(stream, "\t l - local\n");
fprintf(stream, "\t a - autoresrv\n");
fprintf(stream, "\t G - autogrow\n");
#else
fprintf(stream,
"\t s - shared (shared file must exist\n"),
fprintf(stream,
"\t and have needed length)\n");
#endif
fprintf(stream,
"\t f - fixed address (not used)\n");
fprintf(stream,
"\t a - specify address (not used)\n");
fprintf(stream,
"\t U - Unlink file when done\n");
fprintf(stream,
"\t The default flag is private\n");
fprintf(stream, "\n");
#endif /* !CRAY */
fprintf(stream,
"\t-m message_interval Generate a message every 'message_interval'\n");
fprintf(stream,
"\t requests. An interval of 0 suppresses\n");
fprintf(stream,
"\t messages. The default is 0.\n");
fprintf(stream, "\t-N tagname Tag name, for Monster.\n");
fprintf(stream, "\t-n nprocs # of processes to start up\n");
fprintf(stream,
"\t-r release_interval Release all memory and close\n");
fprintf(stream,
"\t files every release_interval operations.\n");
fprintf(stream,
"\t By default procs never release memory\n");
fprintf(stream,
"\t or close fds unless they have to.\n");
fprintf(stream,
"\t-V validation_ftype The type of file descriptor to use for doing data\n");
fprintf(stream,
"\t validation. validation_ftype may be an octal,\n");
fprintf(stream,
"\t hex, or decimal number representing the open()\n");
fprintf(stream,
"\t flags, or may be one of the following strings:\n");
fprintf(stream,
"\t 'buffered' - validate using bufferd read\n");
fprintf(stream,
"\t 'sync' - validate using O_SYNC read\n");
#ifdef sgi
fprintf(stream,
"\t 'direct - validate using O_DIRECT read'\n");
#endif
#ifdef CRAY
fprintf(stream,
"\t 'ldraw' - validate using O_LDRAW read\n");
fprintf(stream,
"\t 'parallel' - validate using O_PARALLEL read\n");
fprintf(stream,
"\t 'raw' - validate using O_RAW read\n");
#endif
fprintf(stream, "\t By default, 'parallel'\n");
fprintf(stream,
"\t is used if the write was done with O_PARALLEL\n");
fprintf(stream,
"\t or 'buffered' for all other writes.\n");
fprintf(stream,
"\t-w write_log File to log file writes to. The doio_check\n");
fprintf(stream,
"\t program can reconstruct datafiles using the\n");
fprintf(stream,
"\t write_log, and detect if a file is corrupt\n");
fprintf(stream,
"\t after all procs have exited.\n");
fprintf(stream,
"\t-U upanic_cond Comma separated list of conditions that will\n");
fprintf(stream,
"\t cause a call to upanic(PA_PANIC).\n");
fprintf(stream,
"\t 'corruption' -> upanic on bad data comparisons\n");
fprintf(stream,
"\t 'iosw' ---> upanic on unexpected async iosw\n");
fprintf(stream,
"\t 'rval' ---> upanic on unexpected syscall rvals\n");
fprintf(stream,
"\t 'all' ---> all of the above\n");
fprintf(stream, "\n");
fprintf(stream,
"\tinfile Input stream - default is stdin - must be a list\n");
fprintf(stream,
"\t of io_req structures (see doio.h). Currently\n");
fprintf(stream,
"\t only the iogen program generates the proper\n");
fprintf(stream, "\t format\n");
}