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fd-util: introduce a simple helper to check a file descriptor has O_PATH

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This commit is contained in:
Yu Watanabe 2023-02-17 07:18:42 +09:00
parent ca8b1d68c5
commit ea61e2e9bd
2 changed files with 13 additions and 0 deletions
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12
src/basic/fd-util.c
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@ -808,6 +808,18 @@ int fd_reopen_condition(
return new_fd;
}
int fd_is_opath(int fd) {
int r;
assert(fd >= 0);
r = fcntl(fd, F_GETFL);
if (r < 0)
return -errno;
return FLAGS_SET(r, O_PATH);
}
int read_nr_open(void) {
_cleanup_free_ char *nr_open = NULL;
int r;

1
src/basic/fd-util.h
View file

@ -104,6 +104,7 @@ static inline int make_null_stdio(void) {
int fd_reopen(int fd, int flags);
int fd_reopen_condition(int fd, int flags, int mask, int *ret_new_fd);
int fd_is_opath(int fd);
int read_nr_open(void);
int fd_get_diskseq(int fd, uint64_t *ret);