projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 16a10468 | 1 | /* Test for access to file, relative to open directory. Hurd version. |
| d4697bc9 | 2 | Copyright (C) 2006-2014 Free Software Foundation, Inc. |
| 16a10468 RM |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 59ba27a6 PE |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 16a10468 RM |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include <fcntl.h> | |
| 21 | #include <stddef.h> | |
| 22 | #include <unistd.h> | |
| 23 | #include <sys/types.h> | |
| 24 | #include <hurd.h> | |
| 25 | #include <hurd/fd.h> | |
| 26 | ||
| 27 | int | |
| 28 | faccessat (fd, file, type, flag) | |
| 29 | int fd; | |
| 30 | const char *file; | |
| 31 | int type; | |
| 32 | int flag; | |
| 33 | { | |
| 34 | error_t err; | |
| 35 | file_t port; | |
| 36 | int allowed, flags; | |
| 37 | ||
| 38 | if ((flag & AT_EACCESS) == 0) | |
| 39 | { | |
| 40 | if (fd == AT_FDCWD || file[0] == '/') | |
| 41 | return __access (file, type); | |
| 42 | __set_errno (ENOTSUP); /* XXX later */ | |
| 43 | return -1; | |
| 44 | } | |
| 45 | ||
| 46 | port = __file_name_lookup_at (fd, flag &~ AT_EACCESS, file, 0, 0); | |
| 47 | if (port == MACH_PORT_NULL) | |
| 48 | return -1; | |
| 49 | ||
| 50 | /* Find out what types of access we are allowed to this file. */ | |
| 51 | err = __file_check_access (port, &allowed); | |
| 52 | __mach_port_deallocate (__mach_task_self (), port); | |
| 53 | if (err) | |
| 54 | return __hurd_fail (err); | |
| 55 | ||
| 56 | flags = 0; | |
| 57 | if (type & R_OK) | |
| 58 | flags |= O_READ; | |
| 59 | if (type & W_OK) | |
| 60 | flags |= O_WRITE; | |
| 61 | if (type & X_OK) | |
| 62 | flags |= O_EXEC; | |
| 63 | ||
| 64 | if (flags & ~allowed) | |
| 65 | /* We are not allowed all the requested types of access. */ | |
| 66 | return __hurd_fail (EACCES); | |
| 67 | ||
| 68 | return 0; | |
| 69 | } |