projects / mirror_lxc.git / blame
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|---|---|---|
| af1dc7cd CB |
1 | /* liblxcapi |
| 2 | * | |
| 3 | * Copyright © 2019 Christian Brauner <christian.brauner@ubuntu.com>. | |
| 4 | * Copyright © 2019 Canonical Ltd. | |
| 5 | * | |
| cd4a865d CB |
6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | * This library is distributed in the hope that it will be useful, | |
| af1dc7cd | 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| cd4a865d CB |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. | |
| 15 | ||
| 16 | * You should have received a copy of the GNU Lesser General Public License | |
| 17 | * along with this library; if not, write to the Free Software Foundation, | |
| 18 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| af1dc7cd CB |
19 | */ |
| 20 | ||
| 21 | #ifndef __LXC_MEMORY_UTILS_H | |
| 22 | #define __LXC_MEMORY_UTILS_H | |
| 23 | ||
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24 | #include <dirent.h> |
| 25 | #include <errno.h> | |
| 26 | #include <stdio.h> | |
| af1dc7cd | 27 | #include <stdlib.h> |
| d97919ab | 28 | #include <sys/types.h> |
| e236fe05 | 29 | #include <unistd.h> |
| af1dc7cd | 30 | |
| 4aa90f60 CB |
31 | #include "macro.h" |
| 32 | ||
| af1dc7cd CB |
33 | static inline void __auto_free__(void *p) |
| 34 | { | |
| 35 | free(*(void **)p); | |
| 36 | } | |
| 37 | ||
| d97919ab CB |
38 | static inline void __auto_fclose__(FILE **f) |
| 39 | { | |
| 40 | if (*f) | |
| 41 | fclose(*f); | |
| 42 | } | |
| 43 | ||
| 44 | static inline void __auto_closedir__(DIR **d) | |
| 45 | { | |
| 46 | if (*d) | |
| 47 | closedir(*d); | |
| 48 | } | |
| 49 | ||
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50 | #define close_prot_errno_disarm(fd) \ |
| 51 | if (fd >= 0) { \ | |
| 52 | int _e_ = errno; \ | |
| 53 | close(fd); \ | |
| 54 | errno = _e_; \ | |
| 55 | fd = -EBADF; \ | |
| 56 | } | |
| 57 | ||
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58 | #define free_disarm(ptr) \ |
| 59 | ({ \ | |
| 60 | free(ptr); \ | |
| 61 | move_ptr(ptr); \ | |
| 62 | }) | |
| 63 | ||
| e236fe05 CB |
64 | static inline void __auto_close__(int *fd) |
| 65 | { | |
| 4aa90f60 | 66 | close_prot_errno_disarm(*fd); |
| e236fe05 CB |
67 | } |
| 68 | ||
| 69 | #define __do_close_prot_errno __attribute__((__cleanup__(__auto_close__))) | |
| af1dc7cd | 70 | #define __do_free __attribute__((__cleanup__(__auto_free__))) |
| d97919ab CB |
71 | #define __do_fclose __attribute__((__cleanup__(__auto_fclose__))) |
| 72 | #define __do_closedir __attribute__((__cleanup__(__auto_closedir__))) | |
| af1dc7cd CB |
73 | |
| 74 | #endif /* __LXC_MEMORY_UTILS_H */ |