HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 35428fb6 | 1 | /* fstat() replacement. |
| f0007cad | 2 | Copyright (C) 2011-2012 Free Software Foundation, Inc. |
| 35428fb6 LC |
3 | |
| 4 | This program is free software: you can redistribute it and/or modify | |
| 5 | it under the terms of the GNU Lesser General Public License as published by | |
| 6 | the Free Software Foundation; either version 3 of the License, or | |
| 7 | (at your option) any later version. | |
| 8 | ||
| 9 | This program is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | GNU Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public License | |
| 15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 16 | ||
| 17 | /* If the user's config.h happens to include <sys/stat.h>, let it include only | |
| 18 | the system's <sys/stat.h> here, so that orig_fstat doesn't recurse to | |
| 19 | rpl_fstat. */ | |
| 20 | #define __need_system_sys_stat_h | |
| 21 | #include <config.h> | |
| 22 | ||
| 23 | /* Get the original definition of fstat. It might be defined as a macro. */ | |
| 24 | #include <sys/types.h> | |
| 25 | #include <sys/stat.h> | |
| 26 | #undef __need_system_sys_stat_h | |
| 27 | ||
| 28 | static inline int | |
| 29 | orig_fstat (int fd, struct stat *buf) | |
| 30 | { | |
| 31 | return fstat (fd, buf); | |
| 32 | } | |
| 33 | ||
| 34 | /* Specification. */ | |
| 35 | /* Write "sys/stat.h" here, not <sys/stat.h>, otherwise OSF/1 5.1 DTK cc | |
| 36 | eliminates this include because of the preliminary #include <sys/stat.h> | |
| 37 | above. */ | |
| 38 | #include "sys/stat.h" | |
| 39 | ||
| 40 | #include <errno.h> | |
| 41 | #include <unistd.h> | |
| 42 | ||
| 43 | #if HAVE_MSVC_INVALID_PARAMETER_HANDLER | |
| 44 | # include "msvc-inval.h" | |
| 45 | #endif | |
| 46 | ||
| 47 | #if HAVE_MSVC_INVALID_PARAMETER_HANDLER | |
| 48 | static inline int | |
| 49 | fstat_nothrow (int fd, struct stat *buf) | |
| 50 | { | |
| 51 | int result; | |
| 52 | ||
| 53 | TRY_MSVC_INVAL | |
| 54 | { | |
| 55 | result = orig_fstat (fd, buf); | |
| 56 | } | |
| 57 | CATCH_MSVC_INVAL | |
| 58 | { | |
| 59 | result = -1; | |
| 60 | errno = EBADF; | |
| 61 | } | |
| 62 | DONE_MSVC_INVAL; | |
| 63 | ||
| 64 | return result; | |
| 65 | } | |
| 66 | #else | |
| 67 | # define fstat_nothrow orig_fstat | |
| 68 | #endif | |
| 69 | ||
| 70 | int | |
| 71 | rpl_fstat (int fd, struct stat *buf) | |
| 72 | { | |
| 73 | #if REPLACE_FCHDIR && REPLACE_OPEN_DIRECTORY | |
| 74 | /* Handle the case when rpl_open() used a dummy file descriptor to work | |
| 75 | around an open() that can't normally visit directories. */ | |
| 76 | const char *name = _gl_directory_name (fd); | |
| 77 | if (name != NULL) | |
| 78 | return stat (name, buf); | |
| 79 | #endif | |
| 80 | ||
| 81 | return fstat_nothrow (fd, buf); | |
| 82 | } |