projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| a334319f | 1 | /* Copyright (C) 2000, 2003 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
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5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
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8 | |
| 9 | The GNU C Library 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 GNU | |
| 41bdb6e2 | 12 | Lesser General Public License for more details. |
| 313fed01 | 13 | |
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14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, write to the Free | |
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 17 | 02111-1307 USA. */ | |
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18 | |
| 19 | #include <errno.h> | |
| 20 | #include <unistd.h> | |
| 21 | ||
| 22 | #include <sysdep.h> | |
| 23 | #include <sys/syscall.h> | |
| 24 | ||
| a334319f | 25 | #include "kernel-features.h" |
| 313fed01 | 26 | |
| 313fed01 | 27 | #ifdef __NR_getuid32 |
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28 | # if __ASSUME_32BITUIDS == 0 |
| 29 | /* This variable is shared with all files that need to check for 32bit | |
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30 | uids. This is the definition. |
| 31 | -1 if libc does not know yet whether kernel has 32bit uids or not. | |
| 32 | 0 if it does have them. | |
| 33 | 1 if it does not have them. */ | |
| 1c848253 | 34 | int __libc_missing_32bit_uids attribute_hidden = -1; |
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35 | # endif |
| 36 | #endif /* __NR_getuid32 */ | |
| 37 | ||
| 38 | uid_t | |
| 39 | __getuid (void) | |
| 40 | { | |
| 1c848253 | 41 | INTERNAL_SYSCALL_DECL (err); |
| 313fed01 | 42 | #if __ASSUME_32BITUIDS > 0 |
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43 | /* No error checking. */ |
| 44 | return INTERNAL_SYSCALL (getuid32, err, 0); | |
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45 | #else |
| 46 | # ifdef __NR_getuid32 | |
| cd090f71 | 47 | if (__libc_missing_32bit_uids <= 0) |
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48 | { |
| 49 | int result; | |
| 313fed01 | 50 | |
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51 | result = INTERNAL_SYSCALL (getuid32, err, 0); |
| 52 | if (! INTERNAL_SYSCALL_ERROR_P (result, err) | |
| 53 | || INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) | |
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54 | return result; |
| 55 | ||
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56 | __libc_missing_32bit_uids = 1; |
| 57 | } | |
| 58 | # endif /* __NR_getuid32 */ | |
| 59 | ||
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60 | /* No error checking. */ |
| 61 | return INTERNAL_SYSCALL (getuid, err, 0); | |
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62 | #endif |
| 63 | } | |
| 64 | ||
| 65 | weak_alias (__getuid, getuid) |