diff options
Diffstat (limited to 'ports/unix/guts/unlinkat.c')
| -rw-r--r-- | ports/unix/guts/unlinkat.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/ports/unix/guts/unlinkat.c b/ports/unix/guts/unlinkat.c new file mode 100644 index 0000000..7b51ab9 --- /dev/null +++ b/ports/unix/guts/unlinkat.c @@ -0,0 +1,61 @@ +/* + * 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 *msg; + int save_errno; + struct stat buf; + int old_db_entry; + +#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_lstat(path, &buf); +#else + rc = real___fxstatat(_STAT_VER, dirfd, path, &buf, AT_SYMLINK_NOFOLLOW); +#endif + if (rc == -1) { + return rc; + } + msg = pseudo_client_op_plain(OP_MAY_UNLINK, 0, -1, dirfd, path, &buf); + if (msg && msg->result == RESULT_SUCCEED) + old_db_entry = 1; +#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS + rc = real_unlink(path); +#else + rc = real_unlinkat(dirfd, path, rflags); +#endif + if (old_db_entry) { + if (rc == -1) { + save_errno = errno; + pseudo_client_op_plain(OP_CANCEL_UNLINK, 0, -1, -1, path, &buf); + errno = save_errno; + } else { + pseudo_client_op_plain(OP_DID_UNLINK, 0, -1, -1, path, &buf); + } + } else { + pseudo_debug(1, "unlink on <%s>, not in database, no effect.\n", path); + } + +/* return rc; + * } + */ |