/*
* Given a full path to a file, translate into a dataset name and a relative
* path within the dataset. 'dataset' must be at least MAXNAMELEN characters,
* and 'relpath' must be at least MAXPATHLEN characters. We also pass a stat64
* buffer, which we need later to get the object ID.
*/
static int
parse_pathname(const char *inpath, char *dataset, char *relpath,
struct stat64 *statbuf)
{
struct extmnttab mp;
FILE *fp;
int match;
const char *rel;
char fullpath[MAXPATHLEN];
compress_slashes(inpath, fullpath);
if (fullpath[0] != '/') {
(void) fprintf(stderr, "invalid object '%s': must be full "
"path\n", fullpath);
usage();
return (-1);
}
if (strlen(fullpath) >= MAXPATHLEN) {
(void) fprintf(stderr, "invalid object; pathname too long\n");
return (-1);
}
if (stat64(fullpath, statbuf) != 0) {
(void) fprintf(stderr, "cannot open '%s': %s\n",
fullpath, strerror(errno));
return (-1);
}
if ((fp = fopen(MNTTAB, "r")) == NULL) {
(void) fprintf(stderr, "cannot open /etc/mnttab\n");
return (-1);
}
match = 0;
while (getextmntent(fp, &mp, sizeof (mp)) == 0) {
if (makedev(mp.mnt_major, mp.mnt_minor) == statbuf->st_dev) {
match = 1;
break;
}
}
if (!match) {
(void) fprintf(stderr, "cannot find mountpoint for '%s'\n",
fullpath);
return (-1);
}
if (strcmp(mp.mnt_fstype, MNTTYPE_ZFS) != 0) {
(void) fprintf(stderr, "invalid path '%s': not a ZFS "
"filesystem\n", fullpath);
return (-1);
}
if (strncmp(fullpath, mp.mnt_mountp, strlen(mp.mnt_mountp)) != 0) {
(void) fprintf(stderr, "invalid path '%s': mountpoint "
"doesn't match path\n", fullpath);
return (-1);
}
(void) strcpy(dataset, mp.mnt_special);
rel = fullpath + strlen(mp.mnt_mountp);
if (rel[0] == '/')
rel++;
(void) strcpy(relpath, rel);
return (0);
}
/*
* Given a full path to a file, translate into a dataset name and a relative
* path within the dataset. 'dataset' must be at least MAXNAMELEN characters,
* and 'relpath' must be at least MAXPATHLEN characters. We also pass a stat
* buffer, which we need later to get the object ID.
*/
static int
parse_pathname(const char *inpath, char *dataset, char *relpath,
struct stat *statbuf)
{
struct extmnttab mp;
FILE *fp;
int match;
const char *rel;
char fullpath[MAXPATHLEN];
compress_slashes(inpath, fullpath);
if (fullpath[0] != '/') {
(void) fprintf(stderr, "invalid object '%s': must be full "
"path\n", fullpath);
usage();
return (-1);
}
if (strlen(fullpath) >= MAXPATHLEN) {
(void) fprintf(stderr, "invalid object; pathname too long\n");
return (-1);
}
if (stat(fullpath, statbuf) != 0) {
(void) fprintf(stderr, "cannot open '%s': %s\n",
fullpath, strerror(errno));
return (-1);
}
#ifdef HAVE_SETMNTENT
if ((fp = setmntent(MNTTAB, "r")) == NULL) {
#else
if ((fp = fopen(MNTTAB, "r")) == NULL) {
#endif
(void) fprintf(stderr, "cannot open /etc/mtab\n");
return (-1);
}
match = 0;
while (getextmntent(fp, &mp, sizeof (mp)) == 0) {
if (makedev(mp.mnt_major, mp.mnt_minor) == statbuf->st_dev) {
match = 1;
break;
}
}
if (!match) {
(void) fprintf(stderr, "cannot find mountpoint for '%s'\n",
fullpath);
return (-1);
}
if (strcmp(mp.mnt_fstype, MNTTYPE_ZFS) != 0) {
(void) fprintf(stderr, "invalid path '%s': not a ZFS "
"filesystem\n", fullpath);
return (-1);
}
if (strncmp(fullpath, mp.mnt_mountp, strlen(mp.mnt_mountp)) != 0) {
(void) fprintf(stderr, "invalid path '%s': mountpoint "
"doesn't match path\n", fullpath);
return (-1);
}
(void) strcpy(dataset, mp.mnt_special);
rel = fullpath + strlen(mp.mnt_mountp);
if (rel[0] == '/')
rel++;
(void) strcpy(relpath, rel);
return (0);
}
#endif
//From FreeBSD
static int
parse_pathname(const char *inpath, char *dataset, char *relpath,
struct stat *statbuf)
{
struct statfs sfs;
const char *rel;
char fullpath[MAXPATHLEN];
compress_slashes(inpath, fullpath);
if (fullpath[0] != '/') {
(void) fprintf(stderr, "invalid object '%s': must be full "
"path\n", fullpath);
usage();
return (-1);
}
if (strlen(fullpath) >= MAXPATHLEN) {
(void) fprintf(stderr, "invalid object; pathname too long\n");
return (-1);
}
if (stat(fullpath, statbuf) != 0) {
(void) fprintf(stderr, "cannot open '%s': %s\n",
fullpath, strerror(errno));
return (-1);
}
if (statfs(fullpath, &sfs) == -1) {
(void) fprintf(stderr, "cannot find mountpoint for '%s': %s\n",
fullpath, strerror(errno));
return (-1);
}
if (strcmp(sfs.f_fstypename, MNTTYPE_ZFS) != 0) {
(void) fprintf(stderr, "invalid path '%s': not a ZFS "
"filesystem\n", fullpath);
return (-1);
}
if (strncmp(fullpath, sfs.f_mntonname, strlen(sfs.f_mntonname)) != 0) {
(void) fprintf(stderr, "invalid path '%s': mountpoint "
"doesn't match path\n", fullpath);
return (-1);
}
(void) strcpy(dataset, sfs.f_mntfromname);
rel = fullpath + strlen(sfs.f_mntonname);
if (rel[0] == '/')
rel++;
(void) strcpy(relpath, rel);
return (0);
}
/*
* Convert from a (dataset, path) pair into a (objset, object) pair. Note that
* we grab the object number from the inode number, since looking this up via
* libzpool is a real pain.
*/
/* ARGSUSED */
static int
object_from_path(const char *dataset, const char *path, struct stat *statbuf,
zinject_record_t *record)
{
objset_t *os;
int err;
/*
* Before doing any libzpool operations, call sync() to ensure that the
* on-disk state is consistent with the in-core state.
*/
sync();
err = dmu_objset_own(dataset, DMU_OST_ZFS, B_TRUE, B_FALSE, FTAG, &os);
if (err != 0) {
(void) fprintf(stderr, "cannot open dataset '%s': %s\n",
dataset, strerror(err));
return (-1);
}
record->zi_objset = dmu_objset_id(os);
record->zi_object = statbuf->st_ino;
dmu_objset_disown(os, B_FALSE, FTAG);
return (0);
}
