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lib/path: add ul_path_is_accessible() 

This function allow to check that path_cxt is usable. Note that
ul_new_path() does not open the path.

Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak 2020-07-08 08:50:07 +02:00
parent bf1d0a4ea0
commit 655d736da3
2 changed files with 15 additions and 0 deletions
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1
include/path.h
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@ -42,6 +42,7 @@ int ul_path_set_enoent_redirect(struct path_cxt *pc, int (*func)(struct path_cxt
int ul_path_get_dirfd(struct path_cxt *pc);
void ul_path_close_dirfd(struct path_cxt *pc);
int ul_path_isopen_dirfd(struct path_cxt *pc);
int ul_path_is_accessible(struct path_cxt *pc);
char *ul_path_get_abspath(struct path_cxt *pc, char *buf, size_t bufsz, const char *path, ...)
__attribute__ ((__format__ (__printf__, 4, 5)));

14
lib/path.c
View File

@ -195,6 +195,20 @@ static const char *get_absdir(struct path_cxt *pc)
return pc->path_buffer;
}
int ul_path_is_accessible(struct path_cxt *pc)
{
const char *path;
assert(pc);
if (pc->dir_fd >= 0)
return 1;
path = get_absdir(pc);
if (!path)
return 0;
return access(path, F_OK) == 0;
}
int ul_path_get_dirfd(struct path_cxt *pc)
{
assert(pc);