/* * util.h * * Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org> * Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org> * Copyright (c) 2005 by Aurelien Foret <orelien@chez.com> * Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu> * Copyright (c) 2006 by David Kimpe <dnaku@frugalware.org> * Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef _ALPM_UTIL_H #define _ALPM_UTIL_H #include "alpm_list.h" #include "alpm.h" #include "package.h" /* alpm_pkg_t */ #include "handle.h" /* alpm_handle_t */ #include <stdio.h> #include <string.h> #include <stdarg.h> #include <stddef.h> /* size_t */ #include <sys/types.h> #include <sys/stat.h> /* struct stat */ #include <math.h> /* fabs */ #include <float.h> /* DBL_EPSILON */ #include <fcntl.h> /* open, close */ #include <archive.h> /* struct archive */ #ifdef ENABLE_NLS #include <libintl.h> /* here so it doesn't need to be included elsewhere */ /* define _() as shortcut for gettext() */ #define _(str) dgettext ("libalpm", str) #else #define _(s) s #endif #define ALLOC_FAIL(s) do { fprintf(stderr, "alloc failure: could not allocate %zd bytes\n", s); } while(0) #define MALLOC(p, s, action) do { p = malloc(s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0) #define CALLOC(p, l, s, action) do { p = calloc(l, s); if(p == NULL) { ALLOC_FAIL(l * s); action; } } while(0) /* This strdup macro is NULL safe- copying NULL will yield NULL */ #define STRDUP(r, s, action) do { if(s != NULL) { r = strdup(s); if(r == NULL) { ALLOC_FAIL(strlen(s)); action; } } else { r = NULL; } } while(0) #define STRNDUP(r, s, l, action) do { if(s != NULL) { r = strndup(s, l); if(r == NULL) { ALLOC_FAIL(strlen(s)); action; } } else { r = NULL; } } while(0) #define FREE(p) do { free(p); p = NULL; } while(0) #define ASSERT(cond, action) do { if(!(cond)) { action; } } while(0) #define RET_ERR_VOID(handle, err) do { \ _alpm_log(handle, ALPM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerror(err)); \ (handle)->pm_errno = (err); \ return; } while(0) #define RET_ERR(handle, err, ret) do { \ _alpm_log(handle, ALPM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerror(err)); \ (handle)->pm_errno = (err); \ return (ret); } while(0) #define DOUBLE_EQ(x, y) (fabs((x) - (y)) < DBL_EPSILON) #define CHECK_HANDLE(handle, action) do { if(!(handle)) { action; } (handle)->pm_errno = 0; } while(0) /** Standard buffer size used throughout the library. */ #ifdef BUFSIZ #define ALPM_BUFFER_SIZE BUFSIZ #else #define ALPM_BUFFER_SIZE 8192 #endif #ifndef O_BINARY #define O_BINARY 0 #endif #define OPEN(fd, path, flags) do { fd = open(path, flags | O_BINARY); } while(fd == -1 && errno == EINTR) #define CLOSE(fd) do { int ret; do { ret = close(fd); } while(ret == -1 && errno == EINTR); } while(0) /** * Used as a buffer/state holder for _alpm_archive_fgets(). */ struct archive_read_buffer { char *line; char *line_offset; size_t line_size; size_t max_line_size; char *block; char *block_offset; size_t block_size; int ret; }; enum _alpm_csum { ALPM_CSUM_MD5, ALPM_CSUM_SHA256, }; int _alpm_makepath(const char *path); int _alpm_makepath_mode(const char *path, mode_t mode); int _alpm_copyfile(const char *src, const char *dest); size_t _alpm_strip_newline(char *str); int _alpm_open_archive(alpm_handle_t *handle, const char *path, struct stat *buf, struct archive **archive, alpm_errno_t error); int _alpm_unpack_single(alpm_handle_t *handle, const char *archive, const char *prefix, const char *filename); int _alpm_unpack(alpm_handle_t *handle, const char *archive, const char *prefix, alpm_list_t *list, int breakfirst); int _alpm_rmrf(const char *path); ssize_t _alpm_files_in_directory(alpm_handle_t *handle, const char *path, int full_count); int _alpm_logaction(alpm_handle_t *handle, const char *fmt, va_list args); int _alpm_run_chroot(alpm_handle_t *handle, const char *cmd, char *const argv[]); int _alpm_ldconfig(alpm_handle_t *handle); int _alpm_str_cmp(const void *s1, const void *s2); char *_alpm_filecache_find(alpm_handle_t *handle, const char *filename); const char *_alpm_filecache_setup(alpm_handle_t *handle); int _alpm_lstat(const char *path, struct stat *buf); int _alpm_test_checksum(const char *filepath, const char *expected, enum _alpm_csum type); int _alpm_archive_fgets(struct archive *a, struct archive_read_buffer *b); int _alpm_splitname(const char *target, char **name, char **version, unsigned long *name_hash); unsigned long _alpm_hash_sdbm(const char *str); off_t _alpm_strtoofft(const char *line); alpm_time_t _alpm_parsedate(const char *line); int _alpm_raw_cmp(const char *first, const char *second); int _alpm_raw_ncmp(const char *first, const char *second, size_t max); int _alpm_access(alpm_handle_t *handle, const char *dir, const char *file, int amode); int _alpm_fnmatch(const void *pattern, const void *string); #ifndef HAVE_STRSEP char *strsep(char **, const char *); #endif #ifndef HAVE_STRNDUP char *strndup(const char *s, size_t n); #endif /* check exported library symbols with: nm -C -D <lib> */ #define SYMEXPORT __attribute__((visibility("default"))) #define SYMHIDDEN __attribute__((visibility("internal"))) #define UNUSED __attribute__((unused)) #endif /* _ALPM_UTIL_H */ /* vim: set ts=2 sw=2 noet: */