diff options
Diffstat (limited to 'guts/__fxstatat64.c')
-rw-r--r-- | guts/__fxstatat64.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/guts/__fxstatat64.c b/guts/__fxstatat64.c new file mode 100644 index 0000000..3edd8c7 --- /dev/null +++ b/guts/__fxstatat64.c @@ -0,0 +1,71 @@ +/* + * static int + * wrap___fxstatat64(int ver, int dirfd, const char *path, struct stat64 *buf, int flags) { + * int rc = -1; + */ + pseudo_msg_t *msg; + int save_errno; + mode_t save_mode = 0; + +#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS + if (dirfd != AT_FDCWD) { + errno = ENOSYS; + return -1; + } +#endif + /* If the file is actually a symlink, we grab the db values + * for the underlying target, then mask in the size and mode + * from the link. Otherwise, we just use the db values (if + * any). + */ + if (flags & AT_SYMLINK_NOFOLLOW) { +#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS + rc = real___lxstat64(ver, path, buf); +#else + rc = real___fxstatat64(ver, dirfd, path, buf, flags); +#endif + if (rc == -1) { + return rc; + } + /* it's a symlink, stash its mode */ + if (S_ISLNK(buf->st_mode)) { + save_mode = buf->st_mode; + } + } else { +#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS + rc = real___xstat64(ver, path, buf); +#else + rc = real___fxstatat64(ver, dirfd, path, buf, flags); +#endif + if (rc == -1) { + return rc; + } + } + /* if we got here: we have valid stat data, for either the symlink + * (if it is a symlink, and we have NOFOLLOW on) or the target. + */ + save_errno = errno; + + if (ver != _STAT_VER) { + pseudo_debug(1, "version mismatch: got stat version %d, only supporting %d\n", ver, _STAT_VER); + errno = save_errno; + return rc; + } + + /* query database + * note that symlink canonicalizing is now automatic, so we + * don't need to check for a symlink on this end + */ + msg = pseudo_client_op(OP_STAT, flags, -1, dirfd, path, buf); + if (msg) { + pseudo_stat_msg(buf, msg); + if (save_mode) { + buf->st_mode = save_mode; + } + } + + errno = save_errno; + +/* return rc; + * } + */ |