1c39e4fbad
This addresses FS#25141. We shouldn't remove every empty directory we come across during the removal process unless it is truly not known to any other package. This will prevent removal of essential directories such as '/var/lock/'. This is accomplished by first checking the empty/non-empty status of a directory, which was previously done implicitly by calling rmdir() and ignoring errors. We do this to avoid the next (new) check in most cases, which is to look at all local packages to see if the to-be-removed directory is present in another packages' filelist. If we do not find it anywhere, then we remove it, else we keep the file around. The pactest has been updated to test more cases, as well as finding a flaw in the original expected to fail case- we need separate DIR and FILE based EXIST rules. Signed-off-by: Dan McGee <dan@archlinux.org>
136 lines
5.1 KiB
C
136 lines
5.1 KiB
C
/*
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* util.h
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*
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* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
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* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
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* Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
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* Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
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* Copyright (c) 2006 by David Kimpe <dnaku@frugalware.org>
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* Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _ALPM_UTIL_H
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#define _ALPM_UTIL_H
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#include "config.h"
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#include "alpm_list.h"
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#include "alpm.h"
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#include "package.h" /* alpm_pkg_t */
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#include "handle.h" /* alpm_handle_t */
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stddef.h> /* size_t */
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#include <time.h>
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#include <sys/stat.h> /* struct stat */
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#include <archive.h> /* struct archive */
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#include <math.h> /* fabs */
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#include <float.h> /* DBL_EPSILON */
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#ifdef ENABLE_NLS
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#include <libintl.h> /* here so it doesn't need to be included elsewhere */
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/* define _() as shortcut for gettext() */
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#define _(str) dgettext ("libalpm", str)
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#else
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#define _(s) s
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#endif
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#define ALLOC_FAIL(s) do { fprintf(stderr, "alloc failure: could not allocate %zd bytes\n", s); } while(0)
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#define MALLOC(p, s, action) do { p = calloc(1, s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0)
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#define CALLOC(p, l, s, action) do { p = calloc(l, s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0)
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/* This strdup macro is NULL safe- copying NULL will yield NULL */
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#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)
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#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)
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#define FREE(p) do { free(p); p = NULL; } while(0)
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#define ASSERT(cond, action) do { if(!(cond)) { action; } } while(0)
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#define RET_ERR_VOID(handle, err) do { \
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_alpm_log(handle, ALPM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerror(err)); \
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(handle)->pm_errno = (err); \
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return; } while(0)
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#define RET_ERR(handle, err, ret) do { \
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_alpm_log(handle, ALPM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerror(err)); \
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(handle)->pm_errno = (err); \
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return (ret); } while(0)
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#define DOUBLE_EQ(x, y) (fabs((x) - (y)) < DBL_EPSILON)
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#define CHECK_HANDLE(handle, action) do { if(!(handle)) { action; } (handle)->pm_errno = 0; } while(0)
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/**
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* Used as a buffer/state holder for _alpm_archive_fgets().
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*/
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struct archive_read_buffer {
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char *line;
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char *line_offset;
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size_t line_size;
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size_t max_line_size;
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char *block;
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char *block_offset;
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size_t block_size;
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int ret;
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};
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int _alpm_makepath(const char *path);
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int _alpm_makepath_mode(const char *path, mode_t mode);
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int _alpm_copyfile(const char *src, const char *dest);
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char *_alpm_strtrim(char *str);
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int _alpm_unpack_single(alpm_handle_t *handle, const char *archive,
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const char *prefix, const char *filename);
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int _alpm_unpack(alpm_handle_t *handle, const char *archive, const char *prefix,
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alpm_list_t *list, int breakfirst);
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int _alpm_rmrf(const char *path);
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ssize_t _alpm_files_in_directory(alpm_handle_t *handle, const char *path, int full_count);
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int _alpm_logaction(alpm_handle_t *handle, const char *fmt, va_list args);
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int _alpm_run_chroot(alpm_handle_t *handle, const char *path, char *const argv[]);
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int _alpm_ldconfig(alpm_handle_t *handle);
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int _alpm_str_cmp(const void *s1, const void *s2);
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char *_alpm_filecache_find(alpm_handle_t *handle, const char *filename);
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const char *_alpm_filecache_setup(alpm_handle_t *handle);
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int _alpm_lstat(const char *path, struct stat *buf);
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int _alpm_test_md5sum(const char *filepath, const char *md5sum);
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int _alpm_archive_fgets(struct archive *a, struct archive_read_buffer *b);
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int _alpm_splitname(const char *target, char **name, char **version,
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unsigned long *name_hash);
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unsigned long _alpm_hash_sdbm(const char *str);
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long _alpm_parsedate(const char *line);
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int _alpm_raw_cmp(const char *first, const char *second);
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int _alpm_raw_ncmp(const char *first, const char *second, size_t max);
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#ifndef HAVE_STRSEP
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char *strsep(char **, const char *);
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#endif
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#ifndef HAVE_STRNDUP
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char *strndup(const char *s, size_t n);
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#endif
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/* check exported library symbols with: nm -C -D <lib> */
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#define SYMEXPORT __attribute__((visibility("default")))
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#define SYMHIDDEN __attribute__((visibility("internal")))
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#define UNUSED __attribute__((unused))
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#endif /* _ALPM_UTIL_H */
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/* vim: set ts=2 sw=2 noet: */
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