/* GNU dump extensions to tar.
Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
- 2003, 2004, 2005, 2006, 2007, 2008 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
the original directory structure */
const char *tagfile; /* Tag file, if the directory falls under
exclusion_tag_under */
+ char *caname; /* canonical name */
char *name; /* file name of directory */
};
/* 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);
struct directory *directory = xmalloc (sizeof (*directory));
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)
{
- struct directory *dir = make_directory (name);
+ char *cname = normalize_filename (name);
+ struct directory *dir = make_directory (name, cname);
if (dirtail)
dirtail->next = dir;
else
}
\f
-static void
-replace_prefix (char **pname, const char *samp, size_t slen,
- const char *repl, size_t rlen)
-{
- char *name = *pname;
- size_t nlen = strlen (name);
- if (nlen > slen && memcmp (name, samp, slen) == 0 && ISSLASH (name[slen]))
- {
- if (rlen > slen)
- {
- name = xrealloc (name, nlen - slen + rlen + 1);
- *pname = name;
- }
- memmove (name + rlen, name + slen, nlen - slen + 1);
- memcpy (name, repl, rlen);
- }
-}
-
void
dirlist_replace_prefix (const char *pref, const char *repl)
{
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_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;
{
struct stat st;
if (deref_stat (dereference_option, p, &st) != 0)
- stat_diag (name);
+ {
+ if (errno != ENOENT)
+ stat_diag (directory->name);
+ /* else: should have been already reported */
+ }
else
directory->mtime = get_stat_mtime (&st);
}
free (p);
}
-#define PD_VERBOSE 0x10
-#define PD_FORCE_CHILDREN 0x20
+#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,
+procdir (const char *name_buffer, struct stat *stat_data,
dev_t device,
int flag,
char *entry)
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,
which is relatively common when automounting.
To avoid spurious incremental redumping of
directories, consider all NFS devices as equal,
relying on the i-node to establish differences. */
-
+
if (! ((!check_device_option
|| (DIR_IS_NFS (directory) && nfs)
|| directory->device_number == stat_data->st_dev)
{
if (strcmp (d->name, name_buffer))
{
- if (verbose_option)
- WARNOPT (WARN_RENAME_DIRECTORY,
- (0, 0,
- _("%s: Directory has been renamed from %s"),
- quotearg_colon (name_buffer),
- quote_n (1, d->name)));
+ 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);
}
else
{
- if (verbose_option)
- WARNOPT (WARN_RENAME_DIRECTORY,
- (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;
}
else
directory->children = CHANGED_CHILDREN;
-
+
DIR_SET_FLAG (directory, DIRF_FOUND);
}
else
{
struct directory *d = find_directory_meta (stat_data->st_dev,
stat_data->st_ino);
-
+
directory = note_directory (name_buffer,
get_stat_mtime(stat_data),
stat_data->st_dev,
{
if (strcmp (d->name, name_buffer))
{
- if (flag & PD_VERBOSE)
- WARNOPT (WARN_RENAME_DIRECTORY,
- (0, 0, _("%s: Directory has been renamed from %s"),
- quotearg_colon (name_buffer),
- quote_n (1, d->name)));
+ 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);
else
{
DIR_SET_FLAG (directory, DIRF_NEW);
- if (flag & PD_VERBOSE)
- WARNOPT (WARN_NEW_DIRECTORY,
- (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 (flag & PD_FORCE_CHILDREN)
{
an exclusion tag. */
exclusion_tag_warning (name_buffer, tag_file_name,
_("directory not dumped"));
- if (entry)
- *entry = 'N';
+ *entry = 'N';
directory->children = NO_CHILDREN;
break;
free (array);
}
-/* Recursively scan the given directory. */
-static const char *
-scan_directory (char *dir, dev_t device)
+/* Recursively scan the given directory DIR.
+ DEVICE is the device number where DIR resides (for --one-file-system).
+ If CMDLINE is true, the directory name was explicitly listed in the
+ command line.
+ Unless *PDIR is NULL, store there a pointer to the struct directory
+ describing DIR. */
+struct directory *
+scan_directory (char *dir, dev_t device, bool cmdline)
{
char *dirp = savedir (dir); /* for scanning directory */
char *name_buffer; /* directory, `/', and directory member */
size_t name_length; /* used length in name_buffer */
struct stat stat_data;
struct directory *directory;
+ char ch;
if (! dirp)
savedir_error (dir);
name_buffer_size = strlen (dir) + NAME_FIELD_SIZE;
name_buffer = xmalloc (name_buffer_size + 2);
strcpy (name_buffer, dir);
- if (! ISSLASH (dir[strlen (dir) - 1]))
- strcat (name_buffer, "/");
- name_length = strlen (name_buffer);
-
+ zap_slashes (name_buffer);
+
if (deref_stat (dereference_option, name_buffer, &stat_data))
{
- stat_diag (name_buffer);
+ dir_removed_diag (name_buffer, false, stat_diag);
/* FIXME: used to be
children = CHANGED_CHILDREN;
but changed to: */
return NULL;
}
- directory = procdir (name_buffer, &stat_data, device, 0, NULL);
+ directory = procdir (name_buffer, &stat_data, device,
+ (cmdline ? PD_FORCE_INIT : 0),
+ &ch);
+
+ name_length = strlen (name_buffer);
+ if (! ISSLASH (name_buffer[name_length - 1]))
+ {
+ name_buffer[name_length] = DIRECTORY_SEPARATOR;
+ /* name_buffer has been allocated an extra slot */
+ name_buffer[++name_length] = 0;
+ }
if (dirp && directory->children != NO_CHILDREN)
{
if (S_ISDIR (stat_data.st_mode))
{
- int pd_flag = (verbose_option ? PD_VERBOSE : 0);
+ int pd_flag = 0;
if (!recursion_option)
pd_flag |= PD_FORCE_CHILDREN | NO_CHILDREN;
else if (directory->children == ALL_CHILDREN)
if (dirp)
free (dirp);
- return directory->dump ? directory->dump->contents : NULL;
+ return directory;
}
+/* Return pointer to the contents of the directory DIR */
const char *
-get_directory_contents (char *dir, dev_t device)
+directory_contents (struct directory *dir)
{
- return scan_directory (dir, 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";
+}
+
+void
+name_fill_directory (struct name *name, dev_t device, bool cmdline)
+{
+ name->directory = scan_directory (name->name, device, cmdline);
}
\f
}
}
-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 (dirhead == NULL)
- return dump;
+ return;
obstack_init (&stk);
+ dump = directory_contents (dir);
if (dump)
{
size = dumpdir_size (dump) - 1;
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
int fd;
char *buf = 0;
size_t bufsize;
+ 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;
projects / chaz / tar / blobdiff