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fs-util: export how many iterations chase_symlinks() executes at max

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This commit is contained in:
Lennart Poettering 2018-04-04 17:06:12 +02:00
parent 49eb36596b
commit f10f4215b5
2 changed files with 4 additions and 1 deletions
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2
src/basic/fs-util.c
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@ -582,7 +582,7 @@ static bool safe_transition(const struct stat *a, const struct stat *b) {
int chase_symlinks(const char *path, const char *original_root, unsigned flags, char **ret) {
_cleanup_free_ char *buffer = NULL, *done = NULL, *root = NULL;
_cleanup_close_ int fd = -1;
unsigned max_follow = 32; /* how many symlinks to follow before giving up and returning ELOOP */
unsigned max_follow = CHASE_SYMLINKS_MAX; /* how many symlinks to follow before giving up and returning ELOOP */
struct stat previous_stat;
bool exists = true;
char *todo;

3
src/basic/fs-util.h
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@ -78,6 +78,9 @@ enum {
CHASE_STEP = 1U << 6, /* If set, just execute a single step of the normalization */
};
/* How many iterations to execute before returning -ELOOP */
#define CHASE_SYMLINKS_MAX 32
int chase_symlinks(const char *path_with_prefix, const char *root, unsigned flags, char **ret);
int chase_symlinks_and_open(const char *path, const char *root, unsigned chase_flags, int open_flags, char **ret_path);