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Keep automatic array search within data-disk filesystem boundaries

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This commit is contained in:
Andrea Mazzoleni 2026-09-25 10:08:00 +02:00
parent ce7d29f178
commit 7662b80023
1 changed files with 70 additions and 4 deletions
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74
cmdline/search.c
View file

@ -6,6 +6,16 @@
#include "support.h"
#include "search.h"
#ifndef _WIN32
static const char* es(int err)
{
if (is_hw(err))
return "error_io";
else
return "error";
}
#endif
/****************************************************************************/
/* search */
@ -145,7 +155,7 @@ int state_search_fetch(struct snapraid_state* state, int prevhash, struct snapra
return 0;
}
static void search_dir(struct snapraid_state* state, struct snapraid_disk* disk, const char* dir, const char* sub)
static void search_dir(struct snapraid_state* state, struct snapraid_disk* disk, const struct fsidentity* root_identity, const char* dir, const char* sub)
{
DIR* d;
@ -245,9 +255,42 @@ static void search_dir(struct snapraid_state* state, struct snapraid_disk* disk,
}
} else if (S_ISDIR(st.st_mode)) {
if (disk == 0 || filter_subdir(&state->filterlist, &reason, disk->name, sub_next) == 0) {
#ifndef _WIN32
/*
* Automatic array search must stay within the same filesystem,
* mount, and subvolume boundaries as the normal data-disk scan.
* Explicit -i imports pass no root identity and may cross them.
*/
if (root_identity) {
struct fsidentity identity;
if (fsidentity(path_next, &st, &identity) != 0) {
/* LCOV_EXCL_START */
log_tag("%s:%u:%s:%s: Statx error. %s.\n", es(errno), 0, disk->name, esc_tag(path_next), strerror(errno));
log_fatal(errno, "Error accessing directory '%s'. %s.\n", path_next, strerror(errno));
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
if (identity.device != root_identity->device) {
log_tag("%s:%u:%s:%s: Ignoring mount point.\n", es(ESOFT), 0, disk->name, esc_tag(path_next));
log_error(ESOFT, "WARNING! Ignoring mount point '%s' because it appears to be in a different device\n", path_next);
continue;
} else if (identity.mnt_id != root_identity->mnt_id) {
log_tag("%s:%u:%s:%s: Ignoring mount point.\n", es(ESOFT), 0, disk->name, esc_tag(path_next));
log_error(ESOFT, "WARNING! Ignoring mount point '%s' because it belongs to a different mount\n", path_next);
continue;
} else if (identity.subvol != root_identity->subvol) {
log_tag("%s:%u:%s:%s: Ignoring nested subvolume.\n", es(ESOFT), 0, disk->name, esc_tag(path_next));
log_error(ESOFT, "WARNING! Ignoring nested subvolume '%s' because it belongs to a different subvolume\n", path_next);
continue;
}
}
#endif
pathslash(path_next, sizeof(path_next));
pathslash(sub_next, sizeof(sub_next));
search_dir(state, disk, path_next, sub_next);
search_dir(state, disk, root_identity, path_next, sub_next);
} else {
msg_verbose("Excluding directory '%s' for rule '%s'\n", path_next, filter_type(reason, out, sizeof(out)));
}
@ -272,7 +315,7 @@ void state_search(struct snapraid_state* state, const char* dir)
pathimport(path, sizeof(path), dir);
pathslash(path, sizeof(path));
search_dir(state, 0, path, "");
search_dir(state, 0, 0, path, "");
}
void state_search_array(struct snapraid_state* state)
@ -289,7 +332,30 @@ void state_search_array(struct snapraid_state* state)
msg_progress("Searching disk %s...\n", disk->name);
search_dir(state, disk, disk->dir, "");
#ifndef _WIN32
struct stat st;
struct fsidentity identity;
if (lstat(disk->dir, &st) != 0) {
/* LCOV_EXCL_START */
log_tag("%s:%u:%s:%s: Stat error. %s.\n", es(errno), 0, disk->name, esc_tag(disk->dir), strerror(errno));
log_fatal(errno, "Error accessing directory '%s'. %s.\n", disk->dir, strerror(errno));
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
if (fsidentity(disk->dir, &st, &identity) != 0) {
/* LCOV_EXCL_START */
log_tag("%s:%u:%s:%s: Statx error. %s.\n", es(errno), 0, disk->name, esc_tag(disk->dir), strerror(errno));
log_fatal(errno, "Error accessing directory '%s'. %s.\n", disk->dir, strerror(errno));
exit(EXIT_FAILURE);
/* LCOV_EXCL_STOP */
}
search_dir(state, disk, &identity, disk->dir, "");
#else
search_dir(state, disk, 0, disk->dir, "");
#endif
}
}