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/*
* Copyright (c) 2008-2010 Wind River Systems; see
* guts/COPYRIGHT for information.
*
* static int
* wrap_unlinkat(int dirfd, const char *path, int rflags) {
* int rc = -1;
*/
pseudo_msg_t *old_file;
int save_errno;
struct stat64 buf;
#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
if (dirfd != AT_FDCWD) {
errno = ENOSYS;
return -1;
}
if (rflags) {
/* the only supported flag is AT_REMOVEDIR. We'd never call
* with that flag unless the real AT functions exist, so
* something must have gone horribly wrong....
*/
pseudo_diag("wrap_unlinkat called with flags (0x%x), path '%s'\n",
rflags, path ? path : "<nil>");
errno = ENOSYS;
return -1;
}
#endif
#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
rc = real___lxstat64(_STAT_VER, path, &buf);
#else
rc = real___fxstatat64(_STAT_VER, dirfd, path, &buf, AT_SYMLINK_NOFOLLOW);
#endif
if (rc == -1) {
return rc;
}
old_file = pseudo_client_op(OP_UNLINK, 0, -1, dirfd, path, &buf);
#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
rc = real_unlink(path);
#else
rc = real_unlinkat(dirfd, path, rflags);
#endif
if (rc == -1) {
save_errno = errno;
if (old_file && old_file->result == RESULT_SUCCEED) {
pseudo_debug(1, "unlink failed, trying to relink...\n");
buf.st_uid = old_file->uid;
buf.st_gid = old_file->uid;
buf.st_mode = old_file->mode;
buf.st_dev = old_file->dev;
buf.st_ino = old_file->ino;
pseudo_client_op(OP_LINK, 0, -1, dirfd, path, &buf);
} else {
pseudo_debug(1, "unlink failed, but found no database entry, ignoring.\n");
}
errno = save_errno;
}
/* return rc;
* }
*/
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