/* GNU dump extensions to tar.
Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
- 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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, or (at your option) any later
+ Free Software Foundation; either version 3, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#include <system.h>
-#include <getline.h>
#include <hash.h>
#include <quotearg.h>
#include "common.h"
#define DIR_IS_INITED(d) ((d)->flags & DIRF_INIT)
#define DIR_IS_NFS(d) ((d)->flags & DIRF_NFS)
#define DIR_IS_FOUND(d) ((d)->flags & DIRF_FOUND)
-#define DIR_IS_NEW(d) ((d)->flags & DIRF_NEW)
+/* #define DIR_IS_NEW(d) ((d)->flags & DIRF_NEW) FIXME: not used */
#define DIR_IS_RENAMED(d) ((d)->flags & DIRF_RENAMED)
#define DIR_SET_FLAG(d,f) (d)->flags |= (f)
#define DIR_CLEAR_FLAG(d,f) (d)->flags &= ~(f)
+struct dumpdir /* Dump directory listing */
+{
+ char *contents; /* Actual contents */
+ size_t total; /* Total number of elements */
+ size_t elc; /* Number of D/N/Y elements. */
+ char **elv; /* Array of D/N/Y elements */
+};
+
/* Directory attributes. */
struct directory
{
+ struct directory *next;
struct timespec mtime; /* Modification time */
dev_t device_number; /* device number for directory */
ino_t inode_number; /* inode number for directory */
- char *contents; /* Directory contents */
- char *icontents; /* Initial contents if the directory was
+ struct dumpdir *dump; /* Directory contents */
+ struct dumpdir *idump; /* Initial contents if the directory was
rescanned */
enum children children; /* What to save under this directory */
unsigned flags; /* See DIRF_ macros above */
struct directory *orig; /* If the directory was renamed, points to
the original directory structure */
- char name[1]; /* file name of directory */
+ const char *tagfile; /* Tag file, if the directory falls under
+ exclusion_tag_under */
+ char *caname; /* canonical name */
+ char *name; /* file name of directory */
};
+static struct dumpdir *
+dumpdir_create0 (const char *contents, const char *cmask)
+{
+ struct dumpdir *dump;
+ size_t i, total, ctsize, len;
+ char *p;
+ const char *q;
+
+ for (i = 0, total = 0, ctsize = 1, q = contents; *q; total++, q += len)
+ {
+ len = strlen (q) + 1;
+ ctsize += len;
+ if (!cmask || strchr (cmask, *q))
+ i++;
+ }
+ dump = xmalloc (sizeof (*dump) + ctsize);
+ dump->contents = (char*)(dump + 1);
+ memcpy (dump->contents, contents, ctsize);
+ dump->total = total;
+ dump->elc = i;
+ dump->elv = xcalloc (i + 1, sizeof (dump->elv[0]));
+
+ for (i = 0, p = dump->contents; *p; p += strlen (p) + 1)
+ {
+ if (!cmask || strchr (cmask, *p))
+ dump->elv[i++] = p + 1;
+ }
+ dump->elv[i] = NULL;
+ return dump;
+}
+
+static struct dumpdir *
+dumpdir_create (const char *contents)
+{
+ return dumpdir_create0 (contents, "YND");
+}
+
+static void
+dumpdir_free (struct dumpdir *dump)
+{
+ free (dump->elv);
+ free (dump);
+}
+
+static int
+compare_dirnames (const void *first, const void *second)
+{
+ char const *const *name1 = first;
+ char const *const *name2 = second;
+ return strcmp (*name1, *name2);
+}
+
+/* Locate NAME in the dumpdir array DUMP.
+ Return pointer to the slot in DUMP->contents, or NULL if not found */
+static char *
+dumpdir_locate (struct dumpdir *dump, const char *name)
+{
+ char **ptr;
+ if (!dump)
+ return NULL;
+
+ ptr = bsearch (&name, dump->elv, dump->elc, sizeof (dump->elv[0]),
+ compare_dirnames);
+ return ptr ? *ptr - 1: NULL;
+}
+
+struct dumpdir_iter
+{
+ struct dumpdir *dump; /* Dumpdir being iterated */
+ int all; /* Iterate over all entries, not only D/N/Y */
+ size_t next; /* Index of the next element */
+};
+
+static char *
+dumpdir_next (struct dumpdir_iter *itr)
+{
+ size_t cur = itr->next;
+ char *ret = NULL;
+
+ if (itr->all)
+ {
+ ret = itr->dump->contents + cur;
+ if (*ret == 0)
+ return NULL;
+ itr->next += strlen (ret) + 1;
+ }
+ else if (cur < itr->dump->elc)
+ {
+ ret = itr->dump->elv[cur] - 1;
+ itr->next++;
+ }
+
+ return ret;
+}
+
+static char *
+dumpdir_first (struct dumpdir *dump, int all, struct dumpdir_iter **pitr)
+{
+ struct dumpdir_iter *itr = xmalloc (sizeof (*itr));
+ itr->dump = dump;
+ itr->all = all;
+ itr->next = 0;
+ *pitr = itr;
+ return dumpdir_next (itr);
+}
+
+/* Return size in bytes of the dumpdir array P */
+size_t
+dumpdir_size (const char *p)
+{
+ size_t totsize = 0;
+
+ while (*p)
+ {
+ size_t size = strlen (p) + 1;
+ totsize += size;
+ p += size;
+ }
+ return totsize + 1;
+}
+
+\f
+static struct directory *dirhead, *dirtail;
static Hash_table *directory_table;
static Hash_table *directory_meta_table;
/* Calculate the hash of a directory. */
static size_t
-hash_directory_name (void const *entry, size_t n_buckets)
+hash_directory_canonical_name (void const *entry, size_t n_buckets)
{
struct directory const *directory = entry;
- return hash_string (directory->name, n_buckets);
+ return hash_string (directory->caname, n_buckets);
}
/* Compare two directories for equality of their names. */
static bool
-compare_directory_names (void const *entry1, void const *entry2)
+compare_directory_canonical_names (void const *entry1, void const *entry2)
{
struct directory const *directory1 = entry1;
struct directory const *directory2 = entry2;
- return strcmp (directory1->name, directory2->name) == 0;
+ return strcmp (directory1->caname, directory2->caname) == 0;
}
static size_t
&& directory1->inode_number == directory2->inode_number;
}
-/* Make a directory entry for given NAME */
+/* Make a directory entry for given relative NAME and canonical name CANAME.
+ The latter is "stolen", i.e. the returned directory contains pointer to
+ it. */
static struct directory *
-make_directory (const char *name)
+make_directory (const char *name, char *caname)
{
size_t namelen = strlen (name);
- size_t size = offsetof (struct directory, name) + namelen + 1;
- struct directory *directory = xmalloc (size);
- directory->contents = directory->icontents = NULL;
+ struct directory *directory = xmalloc (sizeof (*directory));
+ directory->next = NULL;
+ directory->dump = directory->idump = NULL;
directory->orig = NULL;
directory->flags = false;
- strcpy (directory->name, name);
- if (ISSLASH (directory->name[namelen-1]))
- directory->name[namelen-1] = 0;
+ if (namelen > 1 && ISSLASH (name[namelen - 1]))
+ namelen--;
+ directory->name = xmalloc (namelen + 1);
+ memcpy (directory->name, name, namelen);
+ directory->name[namelen] = 0;
+ directory->caname = caname;
+ directory->tagfile = NULL;
return directory;
}
+static void
+free_directory (struct directory *dir)
+{
+ free (dir->caname);
+ free (dir->name);
+ free (dir);
+}
+
+static struct directory *
+attach_directory (const char *name)
+{
+ char *cname = normalize_filename (name);
+ struct directory *dir = make_directory (name, cname);
+ if (dirtail)
+ dirtail->next = dir;
+ else
+ dirhead = dir;
+ dirtail = dir;
+ return dir;
+}
+
+\f
+static void
+dirlist_replace_prefix (const char *pref, const char *repl)
+{
+ struct directory *dp;
+ size_t pref_len = strlen (pref);
+ size_t repl_len = strlen (repl);
+ for (dp = dirhead; dp; dp = dp->next)
+ replace_prefix (&dp->name, pref, pref_len, repl, repl_len);
+}
+
/* Create and link a new directory entry for directory NAME, having a
device number DEV and an inode number INO, with NFS indicating
whether it is an NFS device and FOUND indicating whether we have
found that the directory exists. */
static struct directory *
note_directory (char const *name, struct timespec mtime,
- dev_t dev, ino_t ino, bool nfs, bool found, char *contents)
+ dev_t dev, ino_t ino, bool nfs, bool found,
+ const char *contents)
{
- struct directory *directory = make_directory (name);
+ struct directory *directory = attach_directory (name);
directory->mtime = mtime;
directory->device_number = dev;
if (found)
DIR_SET_FLAG (directory, DIRF_FOUND);
if (contents)
- {
- size_t size = dumpdir_size (contents);
- directory->contents = xmalloc (size);
- memcpy (directory->contents, contents, size);
- }
+ directory->dump = dumpdir_create (contents);
else
- directory->contents = NULL;
+ directory->dump = NULL;
if (! ((directory_table
|| (directory_table = hash_initialize (0, 0,
- hash_directory_name,
- compare_directory_names, 0)))
+ hash_directory_canonical_name,
+ compare_directory_canonical_names, 0)))
&& hash_insert (directory_table, directory)))
xalloc_die ();
return 0;
else
{
- struct directory *dir = make_directory (name);
+ char *caname = normalize_filename (name);
+ struct directory *dir = make_directory (name, caname);
struct directory *ret = hash_lookup (directory_table, dir);
- free (dir);
+ free_directory (dir);
return ret;
}
}
+#if 0
+/* Remove directory entry for the given CANAME */
+void
+remove_directory (const char *caname)
+{
+ struct directory *dir = make_directory (caname, xstrdup (caname));
+ struct directory *ret = hash_delete (directory_table, dir);
+ if (ret)
+ free_directory (ret);
+ free_directory (dir);
+}
+#endif
+
+/* If first OLD_PREFIX_LEN bytes of DIR->NAME name match OLD_PREFIX,
+ replace them with NEW_PREFIX. */
+void
+rebase_directory (struct directory *dir,
+ const char *old_prefix, size_t old_prefix_len,
+ const char *new_prefix, size_t new_prefix_len)
+{
+ replace_prefix (&dir->name, old_prefix, old_prefix_len,
+ new_prefix, new_prefix_len);
+}
+
/* Return a directory entry for a given combination of device and inode
numbers, or zero if none found. */
static struct directory *
return 0;
else
{
- struct directory *dir = make_directory ("");
+ struct directory *dir = make_directory ("", NULL);
struct directory *ret;
dir->device_number = dev;
dir->inode_number = ino;
ret = hash_lookup (directory_meta_table, dir);
- free (dir);
+ free_directory (dir);
return ret;
}
}
void
-update_parent_directory (const char *name)
+update_parent_directory (struct tar_stat_info *parent)
{
- struct directory *directory;
- char *p;
-
- p = dir_name (name);
- directory = find_directory (p);
+ struct directory *directory = find_directory (parent->orig_file_name);
if (directory)
{
struct stat st;
- if (deref_stat (dereference_option, p, &st) != 0)
- stat_diag (name);
+ if (fstatat (parent->fd, ".", &st, fstatat_flags) != 0)
+ stat_diag (directory->name);
else
directory->mtime = get_stat_mtime (&st);
}
- free (p);
}
+#define PD_FORCE_CHILDREN 0x10
+#define PD_FORCE_INIT 0x20
+#define PD_CHILDREN(f) ((f) & 3)
+
static struct directory *
-procdir (char *name_buffer, struct stat *stat_data,
- dev_t device,
- enum children children,
- bool verbose)
+procdir (const char *name_buffer, struct tar_stat_info *st,
+ int flag,
+ char *entry)
{
struct directory *directory;
+ struct stat *stat_data = &st->stat;
+ dev_t device = st->parent ? st->parent->stat.st_dev : 0;
bool nfs = NFS_FILE_STAT (*stat_data);
if ((directory = find_directory (name_buffer)) != NULL)
{
if (DIR_IS_INITED (directory))
- return directory;
+ {
+ if (flag & PD_FORCE_INIT)
+ {
+ assign_string (&directory->name, name_buffer);
+ }
+ else
+ {
+ *entry = 'N'; /* Avoid duplicating this directory */
+ return directory;
+ }
+ }
+
+ if (strcmp (directory->name, name_buffer))
+ {
+ *entry = 'N';
+ return directory;
+ }
/* With NFS, the same file can have two different devices
if an NFS directory is mounted in multiple locations,
directories, consider all NFS devices as equal,
relying on the i-node to establish differences. */
- if (! (((DIR_IS_NFS (directory) & nfs)
+ if (! ((!check_device_option
+ || (DIR_IS_NFS (directory) && nfs)
|| directory->device_number == stat_data->st_dev)
&& directory->inode_number == stat_data->st_ino))
{
stat_data->st_ino);
if (d)
{
- if (verbose_option)
- WARN ((0, 0, _("%s: Directory has been renamed from %s"),
- quotearg_colon (name_buffer),
- quote_n (1, d->name)));
- directory->orig = d;
- DIR_SET_FLAG (directory, DIRF_RENAMED);
+ if (strcmp (d->name, name_buffer))
+ {
+ WARNOPT (WARN_RENAME_DIRECTORY,
+ (0, 0,
+ _("%s: Directory has been renamed from %s"),
+ quotearg_colon (name_buffer),
+ quote_n (1, d->name)));
+ directory->orig = d;
+ DIR_SET_FLAG (directory, DIRF_RENAMED);
+ dirlist_replace_prefix (d->name, name_buffer);
+ }
directory->children = CHANGED_CHILDREN;
}
else
{
- if (verbose_option)
- WARN ((0, 0, _("%s: Directory has been renamed"),
- quotearg_colon (name_buffer)));
+ WARNOPT (WARN_RENAME_DIRECTORY,
+ (0, 0, _("%s: Directory has been renamed"),
+ quotearg_colon (name_buffer)));
directory->children = ALL_CHILDREN;
directory->device_number = stat_data->st_dev;
directory->inode_number = stat_data->st_ino;
if (d)
{
- if (verbose)
- WARN ((0, 0, _("%s: Directory has been renamed from %s"),
- quotearg_colon (name_buffer),
- quote_n (1, d->name)));
- directory->orig = d;
- DIR_SET_FLAG (directory, DIRF_RENAMED);
+ if (strcmp (d->name, name_buffer))
+ {
+ WARNOPT (WARN_RENAME_DIRECTORY,
+ (0, 0, _("%s: Directory has been renamed from %s"),
+ quotearg_colon (name_buffer),
+ quote_n (1, d->name)));
+ directory->orig = d;
+ DIR_SET_FLAG (directory, DIRF_RENAMED);
+ dirlist_replace_prefix (d->name, name_buffer);
+ }
directory->children = CHANGED_CHILDREN;
}
else
{
DIR_SET_FLAG (directory, DIRF_NEW);
- if (verbose)
- WARN ((0, 0, _("%s: Directory is new"),
- quotearg_colon (name_buffer)));
+ WARNOPT (WARN_NEW_DIRECTORY,
+ (0, 0, _("%s: Directory is new"),
+ quotearg_colon (name_buffer)));
directory->children =
(listed_incremental_option
|| (OLDER_STAT_TIME (*stat_data, m)
if (one_file_system_option && device != stat_data->st_dev
/* ... except if it was explicitely given in the command line */
&& !is_individual_file (name_buffer))
+ /* FIXME:
+ WARNOPT (WARN_XDEV,
+ (0, 0,
+ _("%s: directory is on a different filesystem; not dumped"),
+ quotearg_colon (directory->name)));
+ */
directory->children = NO_CHILDREN;
- else if (children == ALL_CHILDREN)
- directory->children = ALL_CHILDREN;
+ else if (flag & PD_FORCE_CHILDREN)
+ {
+ directory->children = PD_CHILDREN(flag);
+ if (directory->children == NO_CHILDREN)
+ *entry = 'N';
+ }
DIR_SET_FLAG (directory, DIRF_INIT);
- return directory;
-}
+ if (directory->children != NO_CHILDREN)
+ {
+ const char *tag_file_name;
-/* Locate NAME in the dumpdir array DUMP.
- Return pointer to the slot in the array, or NULL if not found */
-const char *
-dumpdir_locate (const char *dump, const char *name)
-{
- if (dump)
- while (*dump)
- {
- /* Ignore 'R' (rename) and 'X' (tempname) entries, since they break
- alphabetical ordering.
- They normally do not occur in dumpdirs from the snapshot files,
- but this function is also used by purge_directory, which operates
- on a dumpdir from the archive, hence the need for this test. */
- if (!strchr ("RX", *dump))
- {
- int rc = strcmp (dump + 1, name);
- if (rc == 0)
- return dump;
- if (rc > 1)
- break;
- }
- dump += strlen (dump) + 1;
- }
- return NULL;
-}
+ switch (check_exclusion_tags (st, &tag_file_name))
+ {
+ case exclusion_tag_all:
+ /* This warning can be duplicated by code in dump_file0, but only
+ in case when the topmost directory being archived contains
+ an exclusion tag. */
+ exclusion_tag_warning (name_buffer, tag_file_name,
+ _("directory not dumped"));
+ *entry = 'N';
+ directory->children = NO_CHILDREN;
+ break;
-/* Return size in bytes of the dumpdir array P */
-size_t
-dumpdir_size (const char *p)
-{
- size_t totsize = 0;
+ case exclusion_tag_contents:
+ exclusion_tag_warning (name_buffer, tag_file_name,
+ _("contents not dumped"));
+ directory->children = NO_CHILDREN;
+ break;
- while (*p)
- {
- size_t size = strlen (p) + 1;
- totsize += size;
- p += size;
+ case exclusion_tag_under:
+ exclusion_tag_warning (name_buffer, tag_file_name,
+ _("contents not dumped"));
+ directory->tagfile = tag_file_name;
+ break;
+
+ case exclusion_tag_none:
+ break;
+ }
}
- return totsize + 1;
-}
-static int
-compare_dirnames (const void *first, const void *second)
-{
- return strcmp (*(const char**)first, *(const char**)second);
+ return directory;
}
/* Compare dumpdir array from DIRECTORY with directory listing DIR and
DIR must be returned by a previous call to savedir().
- File names in DIRECTORY->contents must be sorted
+ File names in DIRECTORY->dump->contents must be sorted
alphabetically.
- DIRECTORY->contents is replaced with the created template. Each entry is
+ DIRECTORY->dump is replaced with the created template. Each entry is
prefixed with ' ' if it was present in DUMP and with 'Y' otherwise. */
-void
+static void
makedumpdir (struct directory *directory, const char *dir)
{
size_t i,
const char *p;
char const **array;
char *new_dump, *new_dump_ptr;
- const char *dump;
+ struct dumpdir *dump;
if (directory->children == ALL_CHILDREN)
dump = NULL;
else if (DIR_IS_RENAMED (directory))
- dump = directory->orig->icontents ?
- directory->orig->icontents : directory->orig->contents;
+ dump = directory->orig->idump ?
+ directory->orig->idump : directory->orig->dump;
else
- dump = directory->contents;
+ dump = directory->dump;
/* Count the size of DIR and the number of elements it contains */
dirsize = 0;
const char *loc = dumpdir_locate (dump, array[i]);
if (loc)
{
- *new_dump_ptr++ = ' ';
- dump = loc + strlen (loc) + 1;
+ if (directory->tagfile)
+ *new_dump_ptr = strcmp (directory->tagfile, array[i]) == 0 ?
+ ' ' : 'I';
+ else
+ *new_dump_ptr = ' ';
+ new_dump_ptr++;
}
+ else if (directory->tagfile)
+ *new_dump_ptr++ = strcmp (directory->tagfile, array[i]) == 0 ?
+ ' ' : 'I';
else
*new_dump_ptr++ = 'Y'; /* New entry */
;
}
*new_dump_ptr = 0;
- directory->icontents = directory->contents;
- directory->contents = new_dump;
+ directory->idump = directory->dump;
+ directory->dump = dumpdir_create0 (new_dump, NULL);
free (array);
}
-/* Recursively scan the given directory. */
-static char *
-scan_directory (char *dir_name, dev_t device)
+/* Recursively scan the directory identified by ST. */
+struct directory *
+scan_directory (struct tar_stat_info *st)
{
- char *dirp = savedir (dir_name); /* for scanning directory */
- char *name_buffer; /* directory, `/', and directory member */
- size_t name_buffer_size; /* allocated size of name_buffer, minus 2 */
- size_t name_length; /* used length in name_buffer */
- struct stat stat_data;
+ char const *dir = st->orig_file_name;
+ char *dirp = get_directory_entries (st);
+ dev_t device = st->stat.st_dev;
+ bool cmdline = ! st->parent;
+ namebuf_t nbuf;
+ char *tmp;
struct directory *directory;
+ char ch;
if (! dirp)
- savedir_error (dir_name);
+ savedir_error (dir);
- name_buffer_size = strlen (dir_name) + NAME_FIELD_SIZE;
- name_buffer = xmalloc (name_buffer_size + 2);
- strcpy (name_buffer, dir_name);
- if (! ISSLASH (dir_name[strlen (dir_name) - 1]))
- strcat (name_buffer, "/");
- name_length = strlen (name_buffer);
+ tmp = xstrdup (dir);
+ zap_slashes (tmp);
- if (deref_stat (dereference_option, name_buffer, &stat_data))
- {
- stat_diag (name_buffer);
- /* FIXME: used to be
- children = CHANGED_CHILDREN;
- but changed to: */
- free (name_buffer);
- free (dirp);
- return NULL;
- }
+ directory = procdir (tmp, st,
+ (cmdline ? PD_FORCE_INIT : 0),
+ &ch);
+
+ free (tmp);
- directory = procdir (name_buffer, &stat_data, device, NO_CHILDREN, false);
+ nbuf = namebuf_create (dir);
if (dirp && directory->children != NO_CHILDREN)
{
- char *entry; /* directory entry being scanned */
- size_t entrylen; /* length of directory entry */
+ char *entry; /* directory entry being scanned */
+ struct dumpdir_iter *itr;
makedumpdir (directory, dirp);
- for (entry = directory->contents;
- (entrylen = strlen (entry)) != 0;
- entry += entrylen + 1)
+ for (entry = dumpdir_first (directory->dump, 1, &itr);
+ entry;
+ entry = dumpdir_next (itr))
{
- if (name_buffer_size <= entrylen - 1 + name_length)
- {
- do
- name_buffer_size += NAME_FIELD_SIZE;
- while (name_buffer_size <= entrylen - 1 + name_length);
- name_buffer = xrealloc (name_buffer, name_buffer_size + 2);
- }
- strcpy (name_buffer + name_length, entry + 1);
+ char *full_name = namebuf_name (nbuf, entry + 1);
- if (excluded_name (name_buffer))
+ if (*entry == 'I') /* Ignored entry */
+ *entry = 'N';
+ else if (excluded_name (full_name))
*entry = 'N';
else
{
- if (deref_stat (dereference_option, name_buffer, &stat_data))
+ int fd = st->fd;
+ void (*diag) (char const *) = 0;
+ struct tar_stat_info stsub;
+ tar_stat_init (&stsub);
+
+ if (fd < 0)
{
- stat_diag (name_buffer);
- *entry = 'N';
- continue;
+ errno = - fd;
+ diag = open_diag;
+ }
+ else if (fstatat (fd, entry + 1, &stsub.stat, fstatat_flags) != 0)
+ diag = stat_diag;
+ else if (S_ISDIR (stsub.stat.st_mode))
+ {
+ int subfd = subfile_open (st, entry + 1, open_read_flags);
+ if (subfd < 0)
+ diag = open_diag;
+ else
+ {
+ stsub.fd = subfd;
+ if (fstat (subfd, &stsub.stat) != 0)
+ diag = stat_diag;
+ }
}
- if (S_ISDIR (stat_data.st_mode))
+ if (diag)
{
- procdir (name_buffer, &stat_data, device,
- directory->children,
- verbose_option);
- *entry = 'D';
+ file_removed_diag (full_name, false, diag);
+ *entry = 'N';
}
+ else if (S_ISDIR (stsub.stat.st_mode))
+ {
+ int pd_flag = 0;
+ if (!recursion_option)
+ pd_flag |= PD_FORCE_CHILDREN | NO_CHILDREN;
+ else if (directory->children == ALL_CHILDREN)
+ pd_flag |= PD_FORCE_CHILDREN | ALL_CHILDREN;
+ *entry = 'D';
- else if (one_file_system_option && device != stat_data.st_dev)
+ stsub.parent = st;
+ procdir (full_name, &stsub, pd_flag, entry);
+ restore_parent_fd (&stsub);
+ }
+ else if (one_file_system_option && device != stsub.stat.st_dev)
*entry = 'N';
-
else if (*entry == 'Y')
/* New entry, skip further checks */;
-
/* FIXME: if (S_ISHIDDEN (stat_data.st_mode))?? */
-
- else if (OLDER_STAT_TIME (stat_data, m)
+ else if (OLDER_STAT_TIME (stsub.stat, m)
&& (!after_date_option
- || OLDER_STAT_TIME (stat_data, c)))
+ || OLDER_STAT_TIME (stsub.stat, c)))
*entry = 'N';
else
*entry = 'Y';
+
+ tar_stat_destroy (&stsub);
}
}
+ free (itr);
}
- free (name_buffer);
+ namebuf_free (nbuf);
+
if (dirp)
free (dirp);
- return directory->contents;
+ return directory;
}
-char *
-get_directory_contents (char *dir_name, dev_t device)
+/* Return pointer to the contents of the directory DIR */
+const char *
+directory_contents (struct directory *dir)
{
- return scan_directory (dir_name, device);
+ if (!dir)
+ return NULL;
+ return dir->dump ? dir->dump->contents : NULL;
+}
+
+/* A "safe" version of directory_contents, which never returns NULL. */
+const char *
+safe_directory_contents (struct directory *dir)
+{
+ const char *ret = directory_contents (dir);
+ return ret ? ret : "\0\0\0\0";
}
\f
static void
-obstack_code_rename (struct obstack *stk, char *from, char *to)
+obstack_code_rename (struct obstack *stk, char const *from, char const *to)
{
+ char const *s;
+
+ s = from[0] == 0 ? from :
+ safer_name_suffix (from, false, absolute_names_option);
obstack_1grow (stk, 'R');
- obstack_grow (stk, from, strlen (from) + 1);
+ obstack_grow (stk, s, strlen (s) + 1);
+
+ s = to[0] == 0 ? to:
+ safer_name_suffix (to, false, absolute_names_option);
obstack_1grow (stk, 'T');
- obstack_grow (stk, to, strlen (to) + 1);
+ obstack_grow (stk, s, strlen (s) + 1);
}
-static bool
-rename_handler (void *data, void *proc_data)
+static void
+store_rename (struct directory *dir, struct obstack *stk)
{
- struct directory *dir = data;
- struct obstack *stk = proc_data;
-
if (DIR_IS_RENAMED (dir))
{
struct directory *prev, *p;
- /* Detect eventual cycles and clear DIRF_RENAMED flag, so this entries
+ /* Detect eventual cycles and clear DIRF_RENAMED flag, so these entries
are ignored when hit by this function next time.
If the chain forms a cycle, prev points to the entry DIR is renamed
from. In this case it still retains DIRF_RENAMED flag, which will be
obstack_code_rename (stk, "", prev->name);
}
}
- return true;
}
-const char *
-append_incremental_renames (const char *dump)
+void
+append_incremental_renames (struct directory *dir)
{
struct obstack stk;
size_t size;
+ struct directory *dp;
+ const char *dump;
- if (directory_table == NULL)
- return dump;
+ if (dirhead == NULL)
+ return;
obstack_init (&stk);
+ dump = directory_contents (dir);
if (dump)
{
size = dumpdir_size (dump) - 1;
else
size = 0;
- hash_do_for_each (directory_table, rename_handler, &stk);
+ for (dp = dirhead; dp; dp = dp->next)
+ store_rename (dp, &stk);
+
if (obstack_object_size (&stk) != size)
{
obstack_1grow (&stk, 0);
- dump = obstack_finish (&stk);
+ dumpdir_free (dir->dump);
+ dir->dump = dumpdir_create (obstack_finish (&stk));
}
- else
- obstack_free (&stk, NULL);
- return dump;
+ obstack_free (&stk, NULL);
}
\f
uintmax_t u;
time_t sec;
long int nsec;
- char *buf = 0;
- size_t bufsize;
+ char *buf = NULL;
+ size_t bufsize = 0;
char *ebuf;
long lineno = 1;
/* Read incremental snapshot format 2 */
static void
-read_incr_db_2 ()
+read_incr_db_2 (void)
{
uintmax_t u;
struct obstack stk;
read_directory_file (void)
{
int fd;
- char *buf = 0;
- size_t bufsize;
+ char *buf = NULL;
+ size_t bufsize = 0;
+ int flags = O_RDWR | O_CREAT;
+ if (incremental_level == 0)
+ flags |= O_TRUNC;
/* Open the file for both read and write. That way, we can write
it later without having to reopen it, and don't have to worry if
we chdir in the meantime. */
- fd = open (listed_incremental_option, O_RDWR | O_CREAT, MODE_RW);
+ fd = open (listed_incremental_option, flags, MODE_RW);
if (fd < 0)
{
open_error (listed_incremental_option);
return;
}
+ /* Consume the first name from the name list and reset the
+ list afterwards. This is done to change to the new
+ directory, if the first name is a chdir request (-C dir),
+ which is necessary to recreate absolute file names. */
+ name_from_list ();
+ blank_name_list ();
+
if (0 < getline (&buf, &bufsize, listed_incremental_stream))
{
char *ebuf;
if (DIR_IS_FOUND (directory))
{
char buf[UINTMAX_STRSIZE_BOUND];
- char *s;
+ char const *s;
s = DIR_IS_NFS (directory) ? "1" : "0";
fwrite (s, 2, 1, fp);
fwrite (s, strlen (s) + 1, 1, fp);
fwrite (directory->name, strlen (directory->name) + 1, 1, fp);
- if (directory->contents)
+ if (directory->dump)
{
- char *p;
- for (p = directory->contents; *p; p += strlen (p) + 1)
- {
- if (strchr ("YND", *p))
- fwrite (p, strlen (p) + 1, 1, fp);
- }
+ const char *p;
+ struct dumpdir_iter *itr;
+
+ for (p = dumpdir_first (directory->dump, 0, &itr);
+ p;
+ p = dumpdir_next (itr))
+ fwrite (p, strlen (p) + 1, 1, fp);
+ free (itr);
}
fwrite ("\0\0", 2, 1, fp);
}
if (! fp)
return;
- if (fseek (fp, 0L, SEEK_SET) != 0)
+ if (fseeko (fp, 0L, SEEK_SET) != 0)
seek_error (listed_incremental_option);
if (sys_truncate (fileno (fp)) != 0)
truncate_error (listed_incremental_option);
to = archive_dir;
set_next_block_after (current_header);
- mv_begin (stat_info);
+ mv_begin_read (stat_info);
for (; size > 0; size -= copied)
{
}
if (has_tempdir)
- WARN ((0, 0, _("Malformed dumpdir: 'X' never used")));
+ WARNOPT (WARN_BAD_DUMPDIR,
+ (0, 0, _("Malformed dumpdir: 'X' never used")));
return true;
}
char *current_dir;
char *cur, *arc, *p;
char *temp_stub = NULL;
+ struct dumpdir *dump;
if (!is_dumpdir (¤t_stat_info))
return false;
arc += strlen (arc) + 1;
dst = arc + 1;
+ /* Ensure that neither source nor destination are absolute file
+ names (unless permitted by -P option), and that they do not
+ contain dubious parts (e.g. ../).
+
+ This is an extra safety precaution. Besides, it might be
+ necessary to extract from archives created with tar versions
+ prior to 1.19. */
+
+ if (*src)
+ src = safer_name_suffix (src, false, absolute_names_option);
+ if (*dst)
+ dst = safer_name_suffix (dst, false, absolute_names_option);
+
if (*src == 0)
src = temp_stub;
else if (*dst == 0)
free (temp_stub);
/* Process deletes */
+ dump = dumpdir_create (current_stat_info.dumpdir);
p = NULL;
for (cur = current_dir; *cur; cur += strlen (cur) + 1)
{
free (p);
p = new_name (directory_name, cur);
- if (!(entry = dumpdir_locate (current_stat_info.dumpdir, cur))
- || (*entry == 'D' && S_ISDIR (st.st_mode))
- || (*entry == 'Y' && !S_ISDIR (st.st_mode)))
+ if (deref_stat (false, p, &st))
{
- if (deref_stat (false, p, &st))
+ if (errno != ENOENT) /* FIXME: Maybe keep a list of renamed
+ dirs and check it here? */
{
- if (errno != ENOENT) /* FIXME: Maybe keep a list of renamed
- dirs and check it here? */
- {
- stat_diag (p);
- WARN ((0, 0, _("%s: Not purging directory: unable to stat"),
- quotearg_colon (p)));
- }
- continue;
+ stat_diag (p);
+ WARN ((0, 0, _("%s: Not purging directory: unable to stat"),
+ quotearg_colon (p)));
}
- else if (one_file_system_option && st.st_dev != root_device)
+ continue;
+ }
+
+ if (!(entry = dumpdir_locate (dump, cur))
+ || (*entry == 'D' && !S_ISDIR (st.st_mode))
+ || (*entry == 'Y' && S_ISDIR (st.st_mode)))
+ {
+ if (one_file_system_option && st.st_dev != root_device)
{
WARN ((0, 0,
_("%s: directory is on a different device: not purging"),
}
}
free (p);
+ dumpdir_free (dump);
free (current_dir);
return true;
void
list_dumpdir (char *buffer, size_t size)
{
+ int state = 0;
while (size)
{
switch (*buffer)
case 'R':
case 'T':
case 'X':
- fprintf (stdlis, "%c ", *buffer);
+ fprintf (stdlis, "%c", *buffer);
+ if (state == 0)
+ {
+ fprintf (stdlis, " ");
+ state = 1;
+ }
buffer++;
size--;
break;
fputc ('\n', stdlis);
buffer++;
size--;
+ state = 0;
break;
default:
projects / chaz / tar / blobdiff