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fsstress.c
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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/SGIGPLNoticeExplan/
*/
#define NO_XFS
#define HAVE_SYS_PRCTL_H
#define _LARGEFILE64_SOURCE
#define MAXNAMELEN 1024
struct dioattr {
int d_miniosz, d_maxiosz, d_mem;
};
#define MIN(a,b) ((a)<(b) ? (a):(b))
#define MAX(a,b) ((a)>(b) ? (a):(b))
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdlib.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#ifndef O_DIRECT
#define O_DIRECT 040000
#endif
#ifdef HAVE_SYS_PRCTL_H
# include <sys/prctl.h>
#endif
#define XFS_ERRTAG_MAX 17
typedef enum {
#ifndef NO_XFS
OP_ALLOCSP,
OP_ATTR_REMOVE,
OP_ATTR_SET,
OP_BULKSTAT,
OP_BULKSTAT1,
#endif
OP_CHOWN,
OP_CREAT,
OP_DREAD,
OP_DWRITE,
OP_FDATASYNC,
#ifndef NO_XFS
OP_FREESP,
#endif
OP_FSYNC,
OP_GETDENTS,
OP_LINK,
OP_MKDIR,
OP_MKNOD,
OP_READ,
OP_READLINK,
OP_RENAME,
#ifndef NO_XFS
OP_RESVSP,
#endif
OP_RMDIR,
OP_STAT,
OP_SYMLINK,
OP_SYNC,
OP_TRUNCATE,
OP_UNLINK,
#ifndef NO_XFS
OP_UNRESVSP,
#endif
OP_WRITE,
OP_LAST
} opty_t;
typedef void (*opfnc_t) (int, long);
typedef struct opdesc {
opty_t op;
char *name;
opfnc_t func;
int freq;
int iswrite;
int isxfs;
} opdesc_t;
typedef struct fent {
int id;
int parent;
} fent_t;
typedef struct flist {
int nfiles;
int nslots;
int tag;
fent_t *fents;
} flist_t;
typedef struct pathname {
int len;
char *path;
} pathname_t;
#define FT_DIR 0
#define FT_DIRm (1 << FT_DIR)
#define FT_REG 1
#define FT_REGm (1 << FT_REG)
#define FT_SYM 2
#define FT_SYMm (1 << FT_SYM)
#define FT_DEV 3
#define FT_DEVm (1 << FT_DEV)
#define FT_RTF 4
#define FT_RTFm (1 << FT_RTF)
#define FT_nft 5
#define FT_ANYm ((1 << FT_nft) - 1)
#define FT_REGFILE (FT_REGm | FT_RTFm)
#define FT_NOTDIR (FT_ANYm & ~FT_DIRm)
#define FLIST_SLOT_INCR 16
#define NDCACHE 64
#define MAXFSIZE ((1ULL << 63) - 1ULL)
#define MAXFSIZE32 ((1ULL << 40) - 1ULL)
void allocsp_f(int, long);
void attr_remove_f(int, long);
void attr_set_f(int, long);
void bulkstat_f(int, long);
void bulkstat1_f(int, long);
void chown_f(int, long);
void creat_f(int, long);
void dread_f(int, long);
void dwrite_f(int, long);
void fdatasync_f(int, long);
void freesp_f(int, long);
void fsync_f(int, long);
void getdents_f(int, long);
void link_f(int, long);
void mkdir_f(int, long);
void mknod_f(int, long);
void read_f(int, long);
void readlink_f(int, long);
void rename_f(int, long);
void resvsp_f(int, long);
void rmdir_f(int, long);
void stat_f(int, long);
void symlink_f(int, long);
void sync_f(int, long);
void truncate_f(int, long);
void unlink_f(int, long);
void unresvsp_f(int, long);
void write_f(int, long);
opdesc_t ops[] = {
#ifndef NO_XFS
{OP_ALLOCSP, "allocsp", allocsp_f, 1, 1, 1},
{OP_ATTR_REMOVE, "attr_remove", attr_remove_f, /* 1 */ 0, 1, 1},
{OP_ATTR_SET, "attr_set", attr_set_f, /* 2 */ 0, 1, 1},
{OP_BULKSTAT, "bulkstat", bulkstat_f, 1, 0, 1},
{OP_BULKSTAT1, "bulkstat1", bulkstat1_f, 1, 0, 1},
#endif
{OP_CHOWN, "chown", chown_f, 3, 1, 0},
{OP_CREAT, "creat", creat_f, 4, 1, 0},
{OP_DREAD, "dread", dread_f, 4, 0, 0},
{OP_DWRITE, "dwrite", dwrite_f, 4, 1, 0},
{OP_FDATASYNC, "fdatasync", fdatasync_f, 1, 1, 0},
#ifndef NO_XFS
{OP_FREESP, "freesp", freesp_f, 1, 1, 1},
#endif
{OP_FSYNC, "fsync", fsync_f, 1, 1, 0},
{OP_GETDENTS, "getdents", getdents_f, 1, 0, 0},
{OP_LINK, "link", link_f, 1, 1, 0},
{OP_MKDIR, "mkdir", mkdir_f, 2, 1, 0},
{OP_MKNOD, "mknod", mknod_f, 2, 1, 0},
{OP_READ, "read", read_f, 1, 0, 0},
{OP_READLINK, "readlink", readlink_f, 1, 0, 0},
{OP_RENAME, "rename", rename_f, 2, 1, 0},
#ifndef NO_XFS
{OP_RESVSP, "resvsp", resvsp_f, 1, 1, 1},
#endif
{OP_RMDIR, "rmdir", rmdir_f, 1, 1, 0},
{OP_STAT, "stat", stat_f, 1, 0, 0},
{OP_SYMLINK, "symlink", symlink_f, 2, 1, 0},
{OP_SYNC, "sync", sync_f, 1, 0, 0},
{OP_TRUNCATE, "truncate", truncate_f, 2, 1, 0},
{OP_UNLINK, "unlink", unlink_f, 1, 1, 0},
#ifndef NO_XFS
{OP_UNRESVSP, "unresvsp", unresvsp_f, 1, 1, 1},
#endif
{OP_WRITE, "write", write_f, 4, 1, 0},
}, *ops_end;
flist_t flist[FT_nft] = {
{0, 0, 'd', NULL},
{0, 0, 'f', NULL},
{0, 0, 'l', NULL},
{0, 0, 'c', NULL},
{0, 0, 'r', NULL},
};
int dcache[NDCACHE];
int errrange;
int errtag;
opty_t *freq_table;
int freq_table_size;
#ifndef NO_XFS
xfs_fsop_geom_t geom;
#endif
char *homedir;
int *ilist;
int ilistlen;
off64_t maxfsize;
char *myprog;
int namerand;
int nameseq;
int nops;
int nproc = 1;
int operations = 1;
int procid;
int rtpct;
unsigned long seed = 0;
ino_t top_ino;
int verbose = 0;
#ifndef NO_XFS
int no_xfs = 0;
#else
int no_xfs = 1;
#endif
sig_atomic_t should_stop = 0;
void add_to_flist(int, int, int);
void append_pathname(pathname_t *, char *);
#ifndef NO_XFS
int attr_list_path(pathname_t *, char *, const int, int, attrlist_cursor_t *);
int attr_remove_path(pathname_t *, const char *, int);
int attr_set_path(pathname_t *, const char *, const char *, const int, int);
#endif
void check_cwd(void);
int creat_path(pathname_t *, mode_t);
void dcache_enter(int, int);
void dcache_init(void);
fent_t *dcache_lookup(int);
void dcache_purge(int);
void del_from_flist(int, int);
int dirid_to_name(char *, int);
void doproc(void);
void fent_to_name(pathname_t *, flist_t *, fent_t *);
void fix_parent(int, int);
void free_pathname(pathname_t *);
int generate_fname(fent_t *, int, pathname_t *, int *, int *);
int get_fname(int, long, pathname_t *, flist_t **, fent_t **, int *);
void init_pathname(pathname_t *);
int lchown_path(pathname_t *, uid_t, gid_t);
int link_path(pathname_t *, pathname_t *);
int lstat64_path(pathname_t *, struct stat64 *);
void make_freq_table(void);
int mkdir_path(pathname_t *, mode_t);
int mknod_path(pathname_t *, mode_t, dev_t);
void namerandpad(int, char *, int);
int open_path(pathname_t *, int);
DIR *opendir_path(pathname_t *);
void process_freq(char *);
int readlink_path(pathname_t *, char *, size_t);
int rename_path(pathname_t *, pathname_t *);
int rmdir_path(pathname_t *);
void separate_pathname(pathname_t *, char *, pathname_t *);
void show_ops(int, char *);
int stat64_path(pathname_t *, struct stat64 *);
int symlink_path(const char *, pathname_t *);
int truncate64_path(pathname_t *, off64_t);
int unlink_path(pathname_t *);
void usage(void);
void write_freq(void);
void zero_freq(void);
void sg_handler(int signum)
{
should_stop = 1;
}
int main(int argc, char **argv)
{
char buf[10];
int c;
char *dirname = NULL;
int fd;
int i;
int cleanup = 0;
int loops = 1;
int loopcntr = 1;
char cmd[256];
#ifndef NO_XFS
int j;
#endif
char *p;
int stat;
struct timeval t;
#ifndef NO_XFS
ptrdiff_t srval;
#endif
int nousage = 0;
#ifndef NO_XFS
xfs_error_injection_t err_inj;
#endif
struct sigaction action;
errrange = errtag = 0;
umask(0);
nops = sizeof(ops) / sizeof(ops[0]);
ops_end = &ops[nops];
myprog = argv[0];
while ((c = getopt(argc, argv, "cd:e:f:i:l:n:p:rs:vwzHSX")) != -1) {
switch (c) {
case 'c':
/*Don't cleanup */
cleanup = 1;
break;
case 'd':
dirname = optarg;
break;
case 'e':
sscanf(optarg, "%d", &errtag);
if (errtag < 0) {
errtag = -errtag;
errrange = 1;
} else if (errtag == 0)
errtag = -1;
if (errtag >= XFS_ERRTAG_MAX) {
fprintf(stderr,
"error tag %d too large (max %d)\n",
errtag, XFS_ERRTAG_MAX - 1);
exit(1);
}
break;
case 'f':
process_freq(optarg);
break;
case 'i':
ilist = realloc(ilist, ++ilistlen * sizeof(*ilist));
ilist[ilistlen - 1] = strtol(optarg, &p, 16);
break;
case 'l':
loops = atoi(optarg);
break;
case 'n':
operations = atoi(optarg);
break;
case 'p':
nproc = atoi(optarg);
break;
case 'r':
namerand = 1;
break;
case 's':
seed = strtoul(optarg, NULL, 0);
break;
case 'v':
verbose = 1;
break;
case 'w':
write_freq();
break;
case 'z':
zero_freq();
break;
case 'S':
show_ops(0, NULL);
printf("\n");
nousage = 1;
break;
case '?':
fprintf(stderr, "%s - invalid parameters\n", myprog);
/* fall through */
case 'H':
usage();
exit(1);
case 'X':
no_xfs = 1;
break;
}
}
if (no_xfs && errtag) {
fprintf(stderr, "error injection only works on XFS\n");
exit(1);
}
if (no_xfs) {
int i;
for (i = 0; ops + i < ops_end; ++i) {
if (ops[i].isxfs)
ops[i].freq = 0;
}
}
make_freq_table();
while (((loopcntr <= loops) || (loops == 0)) && !should_stop) {
if (!dirname) {
/* no directory specified */
if (!nousage)
usage();
exit(1);
}
(void)mkdir(dirname, 0777);
if (chdir(dirname) < 0) {
perror(dirname);
exit(1);
}
sprintf(buf, "fss%x", getpid());
fd = creat(buf, 0666);
if (lseek64(fd, (off64_t) (MAXFSIZE32 + 1ULL), SEEK_SET) < 0)
maxfsize = (off64_t) MAXFSIZE32;
else
maxfsize = (off64_t) MAXFSIZE;
dcache_init();
setlinebuf(stdout);
if (!seed) {
gettimeofday(&t, NULL);
seed = (int)t.tv_sec ^ (int)t.tv_usec;
printf("seed = %ld\n", seed);
}
#ifndef NO_XFS
if (!no_xfs) {
memset(&geom, 0, sizeof(geom));
i = ioctl(fd, XFS_IOC_FSGEOMETRY, &geom);
if (i >= 0 && geom.rtblocks)
rtpct = MIN(MAX(geom.rtblocks * 100 /
(geom.rtblocks +
geom.datablocks), 1), 99);
else
rtpct = 0;
}
if (errtag != 0) {
if (errrange == 0) {
if (errtag <= 0) {
srandom(seed);
j = random() % 100;
for (i = 0; i < j; i++)
(void)random();
errtag =
(random() % (XFS_ERRTAG_MAX - 1)) +
1;
}
} else {
srandom(seed);
j = random() % 100;
for (i = 0; i < j; i++)
(void)random();
errtag +=
(random() % (XFS_ERRTAG_MAX - errtag));
}
printf("Injecting failure on tag #%d\n", errtag);
memset(&err_inj, 0, sizeof(err_inj));
err_inj.errtag = errtag;
err_inj.fd = fd;
srval = ioctl(fd, XFS_IOC_ERROR_INJECTION, &err_inj);
if (srval < -1) {
perror
("fsstress - XFS_SYSSGI error injection call");
close(fd);
unlink(buf);
exit(1);
}
} else
#endif
close(fd);
unlink(buf);
if (nproc == 1) {
procid = 0;
doproc();
} else {
setpgid(0, 0);
action.sa_handler = sg_handler;
sigemptyset(&action.sa_mask);
action.sa_flags = 0;
if (sigaction(SIGTERM, &action, 0)) {
perror("sigaction failed");
exit(1);
}
for (i = 0; i < nproc; i++) {
if (fork() == 0) {
action.sa_handler = SIG_DFL;
sigemptyset(&action.sa_mask);
if (sigaction(SIGTERM, &action, 0))
return 1;
#ifdef HAVE_SYS_PRCTL_H
prctl(PR_SET_PDEATHSIG, SIGKILL);
if (getppid() == 1) /* parent died already? */
return 0;
#endif
procid = i;
doproc();
return 0;
}
}
while (wait(&stat) > 0 && !should_stop) {
continue;
}
if (should_stop) {
action.sa_flags = SA_RESTART;
sigaction(SIGTERM, &action, 0);
kill(-getpid(), SIGTERM);
while (wait(&stat) > 0)
continue;
}
}
#ifndef NO_XFS
if (errtag != 0) {
memset(&err_inj, 0, sizeof(err_inj));
err_inj.errtag = 0;
err_inj.fd = fd;
if ((srval =
ioctl(fd, XFS_IOC_ERROR_CLEARALL,
&err_inj)) != 0) {
fprintf(stderr, "Bad ej clear on %d (%d).\n",
fd, errno);
perror
("fsstress - XFS_SYSSGI clear error injection call");
close(fd);
exit(1);
}
close(fd);
}
#endif
if (cleanup == 0) {
sprintf(cmd, "rm -rf %s/*", dirname);
system(cmd);
for (i = 0; i < FT_nft; i++) {
flist[i].nslots = 0;
flist[i].nfiles = 0;
free(flist[i].fents);
flist[i].fents = NULL;
}
}
loopcntr++;
}
return 0;
}
void add_to_flist(int ft, int id, int parent)
{
fent_t *fep;
flist_t *ftp;
ftp = &flist[ft];
if (ftp->nfiles == ftp->nslots) {
ftp->nslots += FLIST_SLOT_INCR;
ftp->fents = realloc(ftp->fents, ftp->nslots * sizeof(fent_t));
}
fep = &ftp->fents[ftp->nfiles++];
fep->id = id;
fep->parent = parent;
}
void append_pathname(pathname_t * name, char *str)
{
int len;
len = strlen(str);
#ifdef DEBUG
if (len && *str == '/' && name->len == 0) {
fprintf(stderr, "fsstress: append_pathname failure\n");
chdir(homedir);
abort();
}
#endif
name->path = realloc(name->path, name->len + 1 + len);
strcpy(&name->path[name->len], str);
name->len += len;
}
#ifndef NO_XFS
int
attr_list_path(pathname_t * name, char *buffer, const int buffersize, int flags,
attrlist_cursor_t * cursor)
{
char buf[MAXNAMELEN];
pathname_t newname;
int rval;
rval = attr_list(name->path, buffer, buffersize, flags, cursor);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
rval = attr_list_path(&newname, buffer, buffersize, flags,
cursor);
chdir("..");
}
free_pathname(&newname);
return rval;
}
int attr_remove_path(pathname_t * name, const char *attrname, int flags)
{
char buf[MAXNAMELEN];
pathname_t newname;
int rval;
rval = attr_remove(name->path, attrname, flags);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
rval = attr_remove_path(&newname, attrname, flags);
chdir("..");
}
free_pathname(&newname);
return rval;
}
int
attr_set_path(pathname_t * name, const char *attrname, const char *attrvalue,
const int valuelength, int flags)
{
char buf[MAXNAMELEN];
pathname_t newname;
int rval;
rval = attr_set(name->path, attrname, attrvalue, valuelength, flags);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
rval = attr_set_path(&newname, attrname, attrvalue, valuelength,
flags);
chdir("..");
}
free_pathname(&newname);
return rval;
}
#endif
void check_cwd(void)
{
#ifdef DEBUG
struct stat64 statbuf;
if (stat64(".", &statbuf) == 0 && statbuf.st_ino == top_ino)
return;
chdir(homedir);
fprintf(stderr, "fsstress: check_cwd failure\n");
abort();
#endif
}
int creat_path(pathname_t * name, mode_t mode)
{
char buf[MAXNAMELEN];
pathname_t newname;
int rval;
rval = creat(name->path, mode);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
rval = creat_path(&newname, mode);
chdir("..");
}
free_pathname(&newname);
return rval;
}
void dcache_enter(int dirid, int slot)
{
dcache[dirid % NDCACHE] = slot;
}
void dcache_init(void)
{
int i;
for (i = 0; i < NDCACHE; i++)
dcache[i] = -1;
}
fent_t *dcache_lookup(int dirid)
{
fent_t *fep;
int i;
i = dcache[dirid % NDCACHE];
if (i >= 0 && (fep = &flist[FT_DIR].fents[i])->id == dirid)
return fep;
return NULL;
}
void dcache_purge(int dirid)
{
int *dcp;
dcp = &dcache[dirid % NDCACHE];
if (*dcp >= 0 && flist[FT_DIR].fents[*dcp].id == dirid)
*dcp = -1;
}
void del_from_flist(int ft, int slot)
{
flist_t *ftp;
ftp = &flist[ft];
if (ft == FT_DIR)
dcache_purge(ftp->fents[slot].id);
if (slot != ftp->nfiles - 1) {
if (ft == FT_DIR)
dcache_purge(ftp->fents[ftp->nfiles - 1].id);
ftp->fents[slot] = ftp->fents[--ftp->nfiles];
} else
ftp->nfiles--;
}
fent_t *dirid_to_fent(int dirid)
{
fent_t *efep;
fent_t *fep;
flist_t *flp;
if ((fep = dcache_lookup(dirid)))
return fep;
flp = &flist[FT_DIR];
for (fep = flp->fents, efep = &fep[flp->nfiles]; fep < efep; fep++) {
if (fep->id == dirid) {
dcache_enter(dirid, fep - flp->fents);
return fep;
}
}
return NULL;
}
void doproc(void)
{
struct stat64 statbuf;
char buf[10];
int opno;
int rval;
opdesc_t *p;
sprintf(buf, "p%x", procid);
(void)mkdir(buf, 0777);
if (chdir(buf) < 0 || stat64(".", &statbuf) < 0) {
perror(buf);
_exit(1);
}
top_ino = statbuf.st_ino;
homedir = getcwd(NULL, -1);
seed += procid;
srandom(seed);
if (namerand)
namerand = random();
for (opno = 0; opno < operations; opno++) {
p = &ops[freq_table[random() % freq_table_size]];
if ((unsigned long)p->func < 4096)
abort();
p->func(opno, random());
/*
* test for forced shutdown by stat'ing the test
* directory. If this stat returns EIO, assume
* the forced shutdown happened.
*/
if (errtag != 0 && opno % 100 == 0) {
rval = stat64(".", &statbuf);
if (rval == EIO) {
fprintf(stderr, "Detected EIO\n");
return;
}
}
}
}
void fent_to_name(pathname_t * name, flist_t * flp, fent_t * fep)
{
char buf[MAXNAMELEN];
int i;
fent_t *pfep;
if (fep == NULL)
return;
if (fep->parent != -1) {
pfep = dirid_to_fent(fep->parent);
fent_to_name(name, &flist[FT_DIR], pfep);
append_pathname(name, "/");
}
i = sprintf(buf, "%c%x", flp->tag, fep->id);
namerandpad(fep->id, buf, i);
append_pathname(name, buf);
}
void fix_parent(int oldid, int newid)
{
fent_t *fep;
flist_t *flp;
int i;
int j;
for (i = 0, flp = flist; i < FT_nft; i++, flp++) {
for (j = 0, fep = flp->fents; j < flp->nfiles; j++, fep++) {
if (fep->parent == oldid)
fep->parent = newid;
}
}
}
void free_pathname(pathname_t * name)
{
if (name->path) {
free(name->path);
name->path = NULL;
name->len = 0;
}
}
int generate_fname(fent_t * fep, int ft, pathname_t * name, int *idp, int *v)
{
char buf[MAXNAMELEN];
flist_t *flp;
int id;
int j;
int len;
flp = &flist[ft];
len = sprintf(buf, "%c%x", flp->tag, id = nameseq++);
namerandpad(id, buf, len);
if (fep) {
fent_to_name(name, &flist[FT_DIR], fep);
append_pathname(name, "/");
}
append_pathname(name, buf);
*idp = id;
*v = verbose;
for (j = 0; !*v && j < ilistlen; j++) {
if (ilist[j] == id) {
*v = 1;
break;
}
}
return 1;
}
int
get_fname(int which, long r, pathname_t * name, flist_t ** flpp, fent_t ** fepp,
int *v)
{
int c;
fent_t *fep;
flist_t *flp;
int i;
int j;
int x;
for (i = 0, c = 0, flp = flist; i < FT_nft; i++, flp++) {
if (which & (1 << i))
c += flp->nfiles;
}
if (c == 0) {
if (flpp)
*flpp = NULL;
if (fepp)
*fepp = NULL;
*v = verbose;
return 0;
}
x = (int)(r % c);
for (i = 0, c = 0, flp = flist; i < FT_nft; i++, flp++) {
if (which & (1 << i)) {
if (x < c + flp->nfiles) {
fep = &flp->fents[x - c];
if (name)
fent_to_name(name, flp, fep);
if (flpp)
*flpp = flp;
if (fepp)
*fepp = fep;
*v = verbose;
for (j = 0; !*v && j < ilistlen; j++) {
if (ilist[j] == fep->id) {
*v = 1;
break;
}
}
return 1;
}
c += flp->nfiles;
}
}
#ifdef DEBUG
fprintf(stderr, "fsstress: get_fname failure\n");
abort();
#endif
return -1;
}
void init_pathname(pathname_t * name)
{
name->len = 0;
name->path = NULL;
}
int lchown_path(pathname_t * name, uid_t owner, gid_t group)
{
char buf[MAXNAMELEN];
pathname_t newname;
int rval;
rval = lchown(name->path, owner, group);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name, buf, &newname);
if (chdir(buf) == 0) {
rval = lchown_path(&newname, owner, group);
chdir("..");
}
free_pathname(&newname);
return rval;
}
int link_path(pathname_t * name1, pathname_t * name2)
{
char buf1[MAXNAMELEN];
char buf2[MAXNAMELEN];
int down1;
pathname_t newname1;
pathname_t newname2;
int rval;
rval = link(name1->path, name2->path);
if (rval >= 0 || errno != ENAMETOOLONG)
return rval;
separate_pathname(name1, buf1, &newname1);
separate_pathname(name2, buf2, &newname2);
if (strcmp(buf1, buf2) == 0) {
if (chdir(buf1) == 0) {
rval = link_path(&newname1, &newname2);
chdir("..");
}
} else {
if (strcmp(buf1, "..") == 0)
down1 = 0;
else if (strcmp(buf2, "..") == 0)
down1 = 1;
else if (strlen(buf1) == 0)
down1 = 0;
else if (strlen(buf2) == 0)
down1 = 1;
else
down1 = MAX(newname1.len, 3 + name2->len) <=
MAX(3 + name1->len, newname2.len);
if (down1) {
free_pathname(&newname2);
append_pathname(&newname2, "../");
append_pathname(&newname2, name2->path);
if (chdir(buf1) == 0) {