summaryrefslogtreecommitdiff
path: root/src/filesdb.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/filesdb.c')
-rw-r--r--src/filesdb.c410
1 files changed, 0 insertions, 410 deletions
diff --git a/src/filesdb.c b/src/filesdb.c
deleted file mode 100644
index 8421d327e..000000000
--- a/src/filesdb.c
+++ /dev/null
@@ -1,410 +0,0 @@
-/*
- * dpkg - main program for package management
- * filesdb.c - management of database of files installed on system
- *
- * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
- * Copyright © 2000,2001 Wichert Akkerman <wakkerma@debian.org>
- * Copyright © 2008-2014 Guillem Jover <guillem@debian.org>
- *
- * This 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 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 <https://www.gnu.org/licenses/>.
- */
-
-#include <config.h>
-#include <compat.h>
-
-#ifdef HAVE_LINUX_FIEMAP_H
-#include <linux/fiemap.h>
-#include <linux/fs.h>
-#include <sys/ioctl.h>
-#include <sys/vfs.h>
-#endif
-#include <sys/types.h>
-#include <sys/stat.h>
-
-#include <errno.h>
-#include <string.h>
-#include <pwd.h>
-#include <grp.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-#include <dpkg/i18n.h>
-#include <dpkg/dpkg.h>
-#include <dpkg/dpkg-db.h>
-#include <dpkg/string.h>
-#include <dpkg/path.h>
-#include <dpkg/dir.h>
-#include <dpkg/fdio.h>
-#include <dpkg/pkg-array.h>
-#include <dpkg/progress.h>
-#include <dpkg/db-ctrl.h>
-
-#include "filesdb.h"
-#include "main.h"
-
-/*** Generic data structures and routines. ***/
-
-static bool allpackagesdone = false;
-
-void note_must_reread_files_inpackage(struct pkginfo *pkg) {
- allpackagesdone = false;
- pkg->files_list_valid = false;
-}
-
-enum pkg_filesdb_load_status {
- PKG_FILESDB_LOAD_NONE = 0,
- PKG_FILESDB_LOAD_INPROGRESS = 1,
- PKG_FILESDB_LOAD_DONE = 2,
-};
-
-static enum pkg_filesdb_load_status saidread = PKG_FILESDB_LOAD_NONE;
-
-/**
- * Erase the files saved in pkg.
- */
-static void
-pkg_files_blank(struct pkginfo *pkg)
-{
- struct fileinlist *current;
-
- for (current = pkg->files;
- current;
- current= current->next) {
- struct pkg_list *pkg_node, *pkg_prev = NULL;
-
- /* For each file that used to be in the package,
- * go through looking for this package's entry in the list
- * of packages containing this file, and blank it out. */
- for (pkg_node = current->namenode->packages;
- pkg_node;
- pkg_node = pkg_node->next) {
- if (pkg_node->pkg == pkg) {
- if (pkg_prev)
- pkg_prev->next = pkg_node->next;
- else
- current->namenode->packages = pkg_node->next;
-
- /* The actual filelist links were allocated using nfmalloc, so
- * we shouldn't free them. */
- break;
- }
- pkg_prev = pkg_node;
- }
- }
- pkg->files = NULL;
-}
-
-static struct fileinlist **
-pkg_files_add_file(struct pkginfo *pkg, struct filenamenode *namenode,
- struct fileinlist **file_tail)
-{
- struct fileinlist *newent;
- struct pkg_list *pkg_node;
-
- if (file_tail == NULL)
- file_tail = &pkg->files;
-
- /* Make sure we're at the end. */
- while ((*file_tail) != NULL) {
- file_tail = &((*file_tail)->next);
- }
-
- /* Create a new node. */
- newent = nfmalloc(sizeof(struct fileinlist));
- newent->namenode = namenode;
- newent->next = NULL;
- *file_tail = newent;
- file_tail = &newent->next;
-
- /* Add pkg to newent's package list. */
- pkg_node = nfmalloc(sizeof(*pkg_node));
- pkg_node->pkg = pkg;
- pkg_node->next = newent->namenode->packages;
- newent->namenode->packages = pkg_node;
-
- /* Return the position for the next guy. */
- return file_tail;
-}
-
-/**
- * Load the list of files in this package into memory, or update the
- * list if it is there but stale.
- */
-void
-ensure_packagefiles_available(struct pkginfo *pkg)
-{
- static int fd;
- const char *filelistfile;
- struct fileinlist **lendp;
- struct stat stat_buf;
- char *loaded_list, *loaded_list_end, *thisline, *nextline, *ptr;
-
- if (pkg->files_list_valid)
- return;
-
- /* Throw away any stale data, if there was any. */
- pkg_files_blank(pkg);
-
- /* Packages which aren't installed don't have a files list. */
- if (pkg->status == PKG_STAT_NOTINSTALLED) {
- pkg->files_list_valid = true;
- return;
- }
-
- filelistfile = pkg_infodb_get_file(pkg, &pkg->installed, LISTFILE);
-
- onerr_abort++;
-
- fd= open(filelistfile,O_RDONLY);
-
- if (fd==-1) {
- if (errno != ENOENT)
- ohshite(_("unable to open files list file for package '%.250s'"),
- pkg_name(pkg, pnaw_nonambig));
- onerr_abort--;
- if (pkg->status != PKG_STAT_CONFIGFILES &&
- dpkg_version_is_informative(&pkg->configversion)) {
- warning(_("files list file for package '%.250s' missing; assuming "
- "package has no files currently installed"),
- pkg_name(pkg, pnaw_nonambig));
- }
- pkg->files = NULL;
- pkg->files_list_valid = true;
- return;
- }
-
- push_cleanup(cu_closefd, ehflag_bombout, NULL, 0, 1, &fd);
-
- if (fstat(fd, &stat_buf))
- ohshite(_("unable to stat files list file for package '%.250s'"),
- pkg_name(pkg, pnaw_nonambig));
-
- if (!S_ISREG(stat_buf.st_mode))
- ohshit(_("files list for package '%.250s' is not a regular file"),
- pkg_name(pkg, pnaw_nonambig));
-
- if (stat_buf.st_size) {
- loaded_list = nfmalloc(stat_buf.st_size);
- loaded_list_end = loaded_list + stat_buf.st_size;
-
- if (fd_read(fd, loaded_list, stat_buf.st_size) < 0)
- ohshite(_("reading files list for package '%.250s'"),
- pkg_name(pkg, pnaw_nonambig));
-
- lendp = &pkg->files;
- thisline = loaded_list;
- while (thisline < loaded_list_end) {
- struct filenamenode *namenode;
-
- ptr = memchr(thisline, '\n', loaded_list_end - thisline);
- if (ptr == NULL)
- ohshit(_("files list file for package '%.250s' is missing final newline"),
- pkg_name(pkg, pnaw_nonambig));
- /* Where to start next time around. */
- nextline = ptr + 1;
- /* Strip trailing ‘/’. */
- if (ptr > thisline && ptr[-1] == '/') ptr--;
- /* Add the file to the list. */
- if (ptr == thisline)
- ohshit(_("files list file for package '%.250s' contains empty filename"),
- pkg_name(pkg, pnaw_nonambig));
- *ptr = '\0';
-
- namenode = findnamenode(thisline, fnn_nocopy);
- lendp = pkg_files_add_file(pkg, namenode, lendp);
- thisline = nextline;
- }
- }
- pop_cleanup(ehflag_normaltidy); /* fd = open() */
- if (close(fd))
- ohshite(_("error closing files list file for package '%.250s'"),
- pkg_name(pkg, pnaw_nonambig));
-
- onerr_abort--;
-
- pkg->files_list_valid = true;
-}
-
-#if defined(HAVE_LINUX_FIEMAP_H)
-static int
-pkg_sorter_by_files_list_phys_offs(const void *a, const void *b)
-{
- const struct pkginfo *pa = *(const struct pkginfo **)a;
- const struct pkginfo *pb = *(const struct pkginfo **)b;
-
- /* We can't simply subtract, because the difference may be greater than
- * INT_MAX. */
- if (pa->files_list_phys_offs < pb->files_list_phys_offs)
- return -1;
- else if (pa->files_list_phys_offs > pb->files_list_phys_offs)
- return 1;
- else
- return 0;
-}
-
-static void
-pkg_files_optimize_load(struct pkg_array *array)
-{
- struct statfs fs;
- int i;
-
- /* Get the filesystem block size. */
- if (statfs(pkg_infodb_get_dir(), &fs) < 0)
- return;
-
- /* Sort packages by the physical location of their list files, so that
- * scanning them later will minimize disk drive head movements. */
- for (i = 0; i < array->n_pkgs; i++) {
- struct pkginfo *pkg = array->pkgs[i];
- struct {
- struct fiemap fiemap;
- struct fiemap_extent extent;
- } fm;
- const char *listfile;
- int fd;
-
- if (pkg->status == PKG_STAT_NOTINSTALLED ||
- pkg->files_list_phys_offs != 0)
- continue;
-
- pkg->files_list_phys_offs = -1;
-
- listfile = pkg_infodb_get_file(pkg, &pkg->installed, LISTFILE);
-
- fd = open(listfile, O_RDONLY);
- if (fd < 0)
- continue;
-
- memset(&fm, 0, sizeof(fm));
- fm.fiemap.fm_start = 0;
- fm.fiemap.fm_length = fs.f_bsize;
- fm.fiemap.fm_flags = 0;
- fm.fiemap.fm_extent_count = 1;
-
- if (ioctl(fd, FS_IOC_FIEMAP, (unsigned long)&fm) == 0)
- pkg->files_list_phys_offs = fm.fiemap.fm_extents[0].fe_physical;
-
- close(fd);
- }
-
- pkg_array_sort(array, pkg_sorter_by_files_list_phys_offs);
-}
-#elif defined(HAVE_POSIX_FADVISE)
-static void
-pkg_files_optimize_load(struct pkg_array *array)
-{
- int i;
-
- /* Ask the kernel to start preloading the list files, so as to get a
- * boost when later we actually load them. */
- for (i = 0; i < array->n_pkgs; i++) {
- struct pkginfo *pkg = array->pkgs[i];
- const char *listfile;
- int fd;
-
- listfile = pkg_infodb_get_file(pkg, &pkg->installed, LISTFILE);
-
- fd = open(listfile, O_RDONLY | O_NONBLOCK);
- if (fd != -1) {
- posix_fadvise(fd, 0, 0, POSIX_FADV_WILLNEED);
- close(fd);
- }
- }
-}
-#else
-static void
-pkg_files_optimize_load(struct pkg_array *array)
-{
-}
-#endif
-
-void ensure_allinstfiles_available(void) {
- struct pkg_array array;
- struct pkginfo *pkg;
- struct progress progress;
- int i;
-
- if (allpackagesdone) return;
- if (saidread < PKG_FILESDB_LOAD_DONE) {
- int max = pkg_db_count_pkg();
-
- saidread = PKG_FILESDB_LOAD_INPROGRESS;
- progress_init(&progress, _("(Reading database ... "), max);
- }
-
- pkg_array_init_from_db(&array);
-
- pkg_files_optimize_load(&array);
-
- for (i = 0; i < array.n_pkgs; i++) {
- pkg = array.pkgs[i];
- ensure_packagefiles_available(pkg);
-
- if (saidread == PKG_FILESDB_LOAD_INPROGRESS)
- progress_step(&progress);
- }
-
- pkg_array_destroy(&array);
-
- allpackagesdone = true;
-
- if (saidread == PKG_FILESDB_LOAD_INPROGRESS) {
- progress_done(&progress);
- printf(P_("%d file or directory currently installed.)\n",
- "%d files and directories currently installed.)\n",
- fsys_hash_entries()),
- fsys_hash_entries());
- saidread = PKG_FILESDB_LOAD_DONE;
- }
-}
-
-void ensure_allinstfiles_available_quiet(void) {
- saidread = PKG_FILESDB_LOAD_DONE;
- ensure_allinstfiles_available();
-}
-
-/*
- * If mask is nonzero, will not write any file whose filenamenode
- * has any flag bits set in mask.
- */
-void
-write_filelist_except(struct pkginfo *pkg, struct pkgbin *pkgbin,
- struct fileinlist *list, enum filenamenode_flags mask)
-{
- struct atomic_file *file;
- struct fileinlist *node;
- const char *listfile;
-
- listfile = pkg_infodb_get_file(pkg, pkgbin, LISTFILE);
-
- file = atomic_file_new(listfile, 0);
- atomic_file_open(file);
-
- for (node = list; node; node = node->next) {
- if (!(mask && (node->namenode->flags & mask))) {
- fputs(node->namenode->name, file->fp);
- putc('\n', file->fp);
- }
- }
-
- atomic_file_sync(file);
- atomic_file_close(file);
- atomic_file_commit(file);
- atomic_file_free(file);
-
- dir_sync_path(pkg_infodb_get_dir());
-
- note_must_reread_files_inpackage(pkg);
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-16 17:52:06 +0000