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authorDan McGee <dan@archlinux.org>2011-03-01 20:39:43 +0100
committerDan McGee <dan@archlinux.org>2011-03-01 20:39:43 +0100
commitb12be99c8925e758554076c87294b4af10ebf05e (patch)
treeea06116e3fcb5933dad83ebb91a006fa71a77410 /lib
parent09ce8b446c01e59a0eb0523846ce6f339ef25fa5 (diff)
downloadpacman-b12be99c8925e758554076c87294b4af10ebf05e.tar.gz
pacman-b12be99c8925e758554076c87294b4af10ebf05e.tar.xz
Ensure d_type is not DT_UNKNOWN before relying on it
Fixes FS#23090, a rather serious problem where the user was completely unable to read the local database. Even if entry->d_type is available, the given filesystem providing it may not fill the contents, in which case we should fall back to a stat() as we did before. In this case, the filesystem was XFS but there may be others. Signed-off-by: Dan McGee <dan@archlinux.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/libalpm/be_local.c22
1 files changed, 13 insertions, 9 deletions
diff --git a/lib/libalpm/be_local.c b/lib/libalpm/be_local.c
index 848ecc58..c3461b77 100644
--- a/lib/libalpm/be_local.c
+++ b/lib/libalpm/be_local.c
@@ -351,18 +351,22 @@ static int checkdbdir(pmdb_t *db)
static int is_dir(const char *path, struct dirent *entry)
{
#ifdef HAVE_STRUCT_DIRENT_D_TYPE
- return(entry->d_type == DT_DIR);
-#else
- char buffer[PATH_MAX];
- snprintf(buffer, PATH_MAX, "%s/%s", path, entry->d_name);
+ if(entry->d_type != DT_UNKNOWN) {
+ return(entry->d_type == DT_DIR);
+ }
+#endif
+ {
+ char buffer[PATH_MAX];
+ struct stat sbuf;
+
+ snprintf(buffer, PATH_MAX, "%s/%s", path, entry->d_name);
- struct stat sbuf;
- if (!stat(buffer, &sbuf)) {
- return(S_ISDIR(sbuf.st_mode));
+ if (!stat(buffer, &sbuf)) {
+ return(S_ISDIR(sbuf.st_mode));
+ }
}
return(0);
-#endif
}
static int local_db_populate(pmdb_t *db)
@@ -462,7 +466,7 @@ static int local_db_populate(pmdb_t *db)
}
/* add to the collection */
- _alpm_log(PM_LOG_FUNCTION, "adding '%s' to package cache for db '%s'\n",
+ _alpm_log(PM_LOG_DEBUG, "adding '%s' to package cache for db '%s'\n",
pkg->name, db->treename);
db->pkgcache = _alpm_pkghash_add(db->pkgcache, pkg);
count++;