/* GNU dump extensions to tar.
- Copyright (C) 1988, 1992, 1993, 1994, 1996, 1997, 1999, 2000, 2001,
- 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright 1988, 1992-1994, 1996-1997, 1999-2001, 2003-2009, 2013-2014
+ 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 3, or (at your option) any later
- version.
+ This file is part of GNU tar.
- 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.
+ GNU tar 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 3 of the License, or
+ (at your option) any later version.
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ GNU tar 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/>. */
#include <system.h>
#include <hash.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)
char *name; /* file name of directory */
};
-struct dumpdir *
+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;
return dump;
}
-struct dumpdir *
+static struct dumpdir *
dumpdir_create (const char *contents)
{
return dumpdir_create0 (contents, "YND");
}
-void
+static void
dumpdir_free (struct dumpdir *dump)
{
free (dump->elv);
/* Locate NAME in the dumpdir array DUMP.
Return pointer to the slot in DUMP->contents, or NULL if not found */
-char *
+static char *
dumpdir_locate (struct dumpdir *dump, const char *name)
{
char **ptr;
struct dumpdir_iter
{
struct dumpdir *dump; /* Dumpdir being iterated */
- int all; /* Iterate over all entries, not only D/N/Y */
+ int all; /* Iterate over all entries, not only D/N/Y */
size_t next; /* Index of the next element */
};
-char *
+static char *
dumpdir_next (struct dumpdir_iter *itr)
{
size_t cur = itr->next;
char *ret = NULL;
-
+
if (itr->all)
{
ret = itr->dump->contents + cur;
return ret;
}
-char *
+static char *
dumpdir_first (struct dumpdir *dump, int all, struct dumpdir_iter **pitr)
{
struct dumpdir_iter *itr = xmalloc (sizeof (*itr));
directory->dump = directory->idump = NULL;
directory->orig = NULL;
directory->flags = false;
- if (namelen && ISSLASH (name[namelen - 1]))
+ if (namelen > 1 && ISSLASH (name[namelen - 1]))
namelen--;
directory->name = xmalloc (namelen + 1);
memcpy (directory->name, name, namelen);
static struct directory *
attach_directory (const char *name)
{
- char *cname = normalize_filename (name);
+ char *cname = normalize_filename (chdir_current, name);
struct directory *dir = make_directory (name, cname);
if (dirtail)
dirtail->next = dir;
dirtail = dir;
return dir;
}
-
+
\f
-void
+static void
dirlist_replace_prefix (const char *pref, const char *repl)
{
struct directory *dp;
replace_prefix (&dp->name, pref, pref_len, repl, repl_len);
}
+void
+clear_directory_table (void)
+{
+ struct directory *dp;
+
+ if (directory_table)
+ hash_clear (directory_table);
+ if (directory_meta_table)
+ hash_clear (directory_meta_table);
+ for (dp = dirhead; dp; )
+ {
+ struct directory *next = dp->next;
+ free_directory (dp);
+ dp = next;
+ }
+ dirhead = dirtail = NULL;
+}
+
/* 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
if (! ((directory_table
|| (directory_table = hash_initialize (0, 0,
hash_directory_canonical_name,
- compare_directory_canonical_names, 0)))
+ compare_directory_canonical_names,
+ 0)))
&& hash_insert (directory_table, directory)))
xalloc_die ();
return 0;
else
{
- char *caname = normalize_filename (name);
+ char *caname = normalize_filename (chdir_current, name);
struct directory *dir = make_directory (name, caname);
struct directory *ret = hash_lookup (directory_table, dir);
free_directory (dir);
}
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)
- {
- if (errno != ENOENT)
- stat_diag (directory->name);
- /* else: should have been already reported */
- }
+ if (fstat (parent->fd, &st) != 0)
+ stat_diag (directory->name);
else
directory->mtime = get_stat_mtime (&st);
}
- free (p);
}
#define PD_FORCE_CHILDREN 0x10
#define PD_CHILDREN(f) ((f) & 3)
static struct directory *
-procdir (const char *name_buffer, struct stat *stat_data,
- dev_t device,
+procdir (const char *name_buffer, struct tar_stat_info *st,
int flag,
char *entry)
{
struct directory *directory;
+ struct stat *stat_data = &st->stat;
bool nfs = NFS_FILE_STAT (*stat_data);
+ bool perhaps_renamed = false;
if ((directory = find_directory (name_buffer)) != NULL)
{
*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)
}
else
{
- WARNOPT (WARN_RENAME_DIRECTORY,
- (0, 0, _("%s: Directory has been renamed"),
- quotearg_colon (name_buffer)));
+ perhaps_renamed = true;
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),
+ get_stat_mtime (stat_data),
stat_data->st_dev,
stat_data->st_ino,
nfs,
}
}
- /* If the directory is on another device and --one-file-system was given,
- omit it... */
- 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;
+ if (one_file_system_option && st->parent
+ && stat_data->st_dev != st->parent->stat.st_dev)
+ {
+ WARNOPT (WARN_XDEV,
+ (0, 0,
+ _("%s: directory is on a different filesystem; not dumped"),
+ quotearg_colon (directory->name)));
+ directory->children = NO_CHILDREN;
+ /* If there is any dumpdir info in that directory, remove it */
+ if (directory->dump)
+ {
+ dumpdir_free (directory->dump);
+ directory->dump = NULL;
+ }
+ perhaps_renamed = false;
+ }
+
else if (flag & PD_FORCE_CHILDREN)
{
directory->children = PD_CHILDREN(flag);
if (directory->children == NO_CHILDREN)
*entry = 'N';
}
-
+
+ if (perhaps_renamed)
+ WARNOPT (WARN_RENAME_DIRECTORY,
+ (0, 0, _("%s: Directory has been renamed"),
+ quotearg_colon (name_buffer)));
+
DIR_SET_FLAG (directory, DIRF_INIT);
if (directory->children != NO_CHILDREN)
{
const char *tag_file_name;
- switch (check_exclusion_tags (name_buffer, &tag_file_name))
+ switch (check_exclusion_tags (st, &tag_file_name))
{
case exclusion_tag_all:
/* This warning can be duplicated by code in dump_file0, but only
exclusion_tag_warning (name_buffer, tag_file_name,
_("contents not dumped"));
directory->children = NO_CHILDREN;
+ directory->tagfile = tag_file_name;
break;
-
+
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;
}
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,
if (loc)
{
if (directory->tagfile)
- *new_dump_ptr = strcmp (directory->tagfile, array[i]) == 0 ?
- ' ' : 'I';
+ *new_dump_ptr = 'I';
else
*new_dump_ptr = ' ';
new_dump_ptr++;
}
else if (directory->tagfile)
- *new_dump_ptr++ = strcmp (directory->tagfile, array[i]) == 0 ?
- ' ' : 'I';
+ *new_dump_ptr++ = 'I';
else
*new_dump_ptr++ = 'Y'; /* New entry */
*new_dump_ptr = 0;
directory->idump = directory->dump;
directory->dump = dumpdir_create0 (new_dump, NULL);
+ free (new_dump);
free (array);
}
-/* 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. */
+/* Create a dumpdir containing only one entry: that for the
+ tagfile. */
+static void
+maketagdumpdir (struct directory *directory)
+{
+ size_t len = strlen (directory->tagfile) + 1;
+ char *new_dump = xmalloc (len + 2);
+ new_dump[0] = 'Y';
+ memcpy (new_dump + 1, directory->tagfile, len);
+ new_dump[len + 1] = 0;
+
+ directory->idump = directory->dump;
+ directory->dump = dumpdir_create0 (new_dump, NULL);
+ free (new_dump);
+}
+
+/* Recursively scan the directory identified by ST. */
struct directory *
-scan_directory (char *dir, dev_t device, bool cmdline)
+scan_directory (struct tar_stat_info *st)
{
- char *dirp = savedir (dir); /* for scanning directory */
+ 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 stat stat_data;
struct directory *directory;
char ch;
-
+
if (! dirp)
savedir_error (dir);
tmp = xstrdup (dir);
zap_slashes (tmp);
-
- if (deref_stat (dereference_option, tmp, &stat_data))
- {
- dir_removed_diag (tmp, cmdline, stat_diag);
- free (tmp);
- free (dirp);
- return NULL;
- }
- directory = procdir (tmp, &stat_data, device,
+ directory = procdir (tmp, st,
(cmdline ? PD_FORCE_INIT : 0),
&ch);
-
+
free (tmp);
nbuf = namebuf_create (dir);
- if (dirp && directory->children != NO_CHILDREN)
+ if (dirp)
{
- char *entry; /* directory entry being scanned */
- dumpdir_iter_t itr;
-
- makedumpdir (directory, dirp);
-
- for (entry = dumpdir_first (directory->dump, 1, &itr);
- entry;
- entry = dumpdir_next (itr))
+ if (directory->children != NO_CHILDREN)
{
- char *full_name = namebuf_name (nbuf, entry + 1);
+ char *entry; /* directory entry being scanned */
+ struct dumpdir_iter *itr;
- if (*entry == 'I') /* Ignored entry */
- *entry = 'N';
- else if (excluded_name (full_name))
- *entry = 'N';
- else
- {
- if (deref_stat (dereference_option, full_name, &stat_data))
- {
- file_removed_diag (full_name, false, stat_diag);
- *entry = 'N';
- continue;
- }
+ makedumpdir (directory, dirp);
- if (S_ISDIR (stat_data.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';
- procdir (full_name, &stat_data, device, pd_flag, entry);
- }
+ for (entry = dumpdir_first (directory->dump, 1, &itr);
+ entry;
+ entry = dumpdir_next (itr))
+ {
+ char *full_name = namebuf_name (nbuf, entry + 1);
- else if (one_file_system_option && device != stat_data.st_dev)
+ if (*entry == 'I') /* Ignored entry */
*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)
- && (!after_date_option
- || OLDER_STAT_TIME (stat_data, c)))
+ else if (excluded_name (full_name))
*entry = 'N';
else
- *entry = 'Y';
+ {
+ int fd = st->fd;
+ void (*diag) (char const *) = 0;
+ struct tar_stat_info stsub;
+ tar_stat_init (&stsub);
+
+ if (fd < 0)
+ {
+ 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 (diag)
+ {
+ 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';
+
+ 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 (stsub.stat, m)
+ && (!after_date_option
+ || OLDER_STAT_TIME (stsub.stat, c)))
+ *entry = 'N';
+ else
+ *entry = 'Y';
+
+ tar_stat_destroy (&stsub);
+ }
}
+ free (itr);
}
- free (itr);
+ else if (directory->tagfile)
+ maketagdumpdir (directory);
}
namebuf_free (nbuf);
- if (dirp)
- free (dirp);
+ free (dirp);
return directory;
}
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
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 *s;
+ char const *s;
s = from[0] == 0 ? from :
safer_name_suffix (from, false, absolute_names_option);
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
- cleared in the `else' branch below */
+ cleared in the 'else' branch below */
for (prev = dir; prev && prev->orig != dir; prev = prev->orig)
DIR_CLEAR_FLAG (prev, DIRF_RENAMED);
size_t size;
struct directory *dp;
const char *dump;
-
+
if (dirhead == NULL)
return;
for (dp = dirhead; dp; dp = dp->next)
store_rename (dp, &stk);
- if (obstack_object_size (&stk) != size)
+ /* FIXME: Is this the right thing to do when DIR is null? */
+ if (dir && obstack_object_size (&stk) != size)
{
obstack_1grow (&stk, 0);
dumpdir_free (dir->dump);
{
int n;
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;
bufsize = strlen (buf) + 1;
}
- sec = TYPE_MINIMUM (time_t);
- nsec = -1;
- errno = 0;
- u = strtoumax (buf, &ebuf, 10);
- if (!errno && TYPE_MAXIMUM (time_t) < u)
- errno = ERANGE;
- if (errno || buf == ebuf)
+ newer_mtime_option = decode_timespec (buf, &ebuf, false);
+
+ if (! valid_timespec (newer_mtime_option))
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option),
lineno,
_("Invalid time stamp")));
else
{
- sec = u;
-
if (version == 1 && *ebuf)
{
char const *buf_ns = ebuf + 1;
quotearg_colon (listed_incremental_option),
lineno,
_("Invalid time stamp")));
- sec = TYPE_MINIMUM (time_t);
+ newer_mtime_option.tv_sec = TYPE_MINIMUM (time_t);
+ newer_mtime_option.tv_nsec = -1;
}
else
- nsec = u;
- }
- else
- {
- /* pre-1 incremental format does not contain nanoseconds */
- nsec = 0;
+ newer_mtime_option.tv_nsec = u;
}
}
- newer_mtime_option.tv_sec = sec;
- newer_mtime_option.tv_nsec = nsec;
-
while (0 < (n = getline (&buf, &bufsize, listed_incremental_stream)))
{
if (version == 1)
{
- errno = 0;
- u = strtoumax (strp, &ebuf, 10);
- if (!errno && TYPE_MAXIMUM (time_t) < u)
- errno = ERANGE;
- if (errno || strp == ebuf || *ebuf != ' ')
- {
- ERROR ((0, errno, "%s:%ld: %s",
- quotearg_colon (listed_incremental_option), lineno,
- _("Invalid modification time (seconds)")));
- sec = (time_t) -1;
- }
- else
- sec = u;
+ mtime = decode_timespec (strp, &ebuf, false);
strp = ebuf;
+ if (!valid_timespec (mtime) || *strp != ' ')
+ ERROR ((0, errno, "%s:%ld: %s",
+ quotearg_colon (listed_incremental_option), lineno,
+ _("Invalid modification time")));
errno = 0;
u = strtoumax (strp, &ebuf, 10);
ERROR ((0, errno, "%s:%ld: %s",
quotearg_colon (listed_incremental_option), lineno,
_("Invalid modification time (nanoseconds)")));
- nsec = -1;
+ mtime.tv_nsec = -1;
}
else
- nsec = u;
- mtime.tv_sec = sec;
- mtime.tv_nsec = nsec;
+ mtime.tv_nsec = u;
strp = ebuf;
}
else
- memset (&mtime, 0, sizeof mtime);
+ mtime.tv_sec = mtime.tv_nsec = 0;
- errno = 0;
- u = strtoumax (strp, &ebuf, 10);
- if (!errno && TYPE_MAXIMUM (dev_t) < u)
- errno = ERANGE;
- if (errno || strp == ebuf || *ebuf != ' ')
- {
- ERROR ((0, errno, "%s:%ld: %s",
- quotearg_colon (listed_incremental_option), lineno,
- _("Invalid device number")));
- dev = (dev_t) -1;
- }
- else
- dev = u;
+ dev = strtosysint (strp, &ebuf,
+ TYPE_MINIMUM (dev_t), TYPE_MAXIMUM (dev_t));
strp = ebuf;
+ if (errno || *strp != ' ')
+ ERROR ((0, errno, "%s:%ld: %s",
+ quotearg_colon (listed_incremental_option), lineno,
+ _("Invalid device number")));
- errno = 0;
- u = strtoumax (strp, &ebuf, 10);
- if (!errno && TYPE_MAXIMUM (ino_t) < u)
- errno = ERANGE;
- if (errno || strp == ebuf || *ebuf != ' ')
- {
- ERROR ((0, errno, "%s:%ld: %s",
- quotearg_colon (listed_incremental_option), lineno,
- _("Invalid inode number")));
- ino = (ino_t) -1;
- }
- else
- ino = u;
+ ino = strtosysint (strp, &ebuf,
+ TYPE_MINIMUM (ino_t), TYPE_MAXIMUM (ino_t));
strp = ebuf;
+ if (errno || *strp != ' ')
+ ERROR ((0, errno, "%s:%ld: %s",
+ quotearg_colon (listed_incremental_option), lineno,
+ _("Invalid inode number")));
strp++;
unquote_string (strp);
return c;
}
-/* Read from file FP a nul-terminated string and convert it to
- intmax_t. Return the resulting value in PVAL. Assume '-' has
- already been read.
+/* Read from file FP a null-terminated string and convert it to an
+ integer. FIELDNAME is the intended use of the integer, useful for
+ diagnostics. MIN_VAL and MAX_VAL are its minimum and maximum
+ permissible values; MIN_VAL must be nonpositive and MAX_VAL positive.
+ Store into *PVAL the resulting value, converted to intmax_t.
Throw a fatal error if the string cannot be converted or if the
- converted value is less than MIN_VAL. */
+ converted value is out of range.
-static void
-read_negative_num (FILE *fp, intmax_t min_val, intmax_t *pval)
+ Return true if successful, false if end of file. */
+
+static bool
+read_num (FILE *fp, char const *fieldname,
+ intmax_t min_val, uintmax_t max_val, intmax_t *pval)
{
- int c;
- size_t i;
+ int i;
char buf[INT_BUFSIZE_BOUND (intmax_t)];
- char *ep;
- buf[0] = '-';
+ char offbuf[INT_BUFSIZE_BOUND (off_t)];
+ char minbuf[INT_BUFSIZE_BOUND (intmax_t)];
+ char maxbuf[INT_BUFSIZE_BOUND (intmax_t)];
+ int conversion_errno;
+ int c = getc (fp);
+ bool negative = c == '-';
- for (i = 1; ISDIGIT (c = getc (fp)); i++)
+ for (i = 0; (i == 0 && negative) || ISDIGIT (c); i++)
{
- if (i == sizeof buf - 1)
- FATAL_ERROR ((0, 0, _("Field too long while reading snapshot file")));
buf[i] = c;
- }
-
- if (c < 0)
- {
- if (ferror (fp))
- FATAL_ERROR ((0, errno, _("Read error in snapshot file")));
- else
- FATAL_ERROR ((0, 0, _("Unexpected EOF in snapshot file")));
- }
-
- buf[i] = 0;
- errno = 0;
- *pval = strtoimax (buf, &ep, 10);
- if (c || errno || *pval < min_val)
- FATAL_ERROR ((0, errno, _("Unexpected field value in snapshot file")));
-}
-
-/* Read from file FP a nul-terminated string and convert it to
- uintmax_t. Return the resulting value in PVAL. Assume C has
- already been read.
-
- Throw a fatal error if the string cannot be converted or if the
- converted value exceeds MAX_VAL.
-
- Return the last character read or EOF on end of file. */
-
-static int
-read_unsigned_num (int c, FILE *fp, uintmax_t max_val, uintmax_t *pval)
-{
- size_t i;
- char buf[UINTMAX_STRSIZE_BOUND], *ep;
-
- for (i = 0; ISDIGIT (c); i++)
- {
if (i == sizeof buf - 1)
- FATAL_ERROR ((0, 0, _("Field too long while reading snapshot file")));
- buf[i] = c;
+ FATAL_ERROR ((0, 0,
+ _("%s: byte %s: %s %.*s... too long"),
+ quotearg_colon (listed_incremental_option),
+ offtostr (ftello (fp), offbuf),
+ fieldname, i + 1, buf));
c = getc (fp);
}
+ buf[i] = 0;
+
if (c < 0)
{
if (ferror (fp))
- FATAL_ERROR ((0, errno, _("Read error in snapshot file")));
- else if (i == 0)
- return c;
- else
- FATAL_ERROR ((0, 0, _("Unexpected EOF in snapshot file")));
+ read_fatal (listed_incremental_option);
+ if (i != 0)
+ FATAL_ERROR ((0, 0, "%s: %s",
+ quotearg_colon (listed_incremental_option),
+ _("Unexpected EOF in snapshot file")));
+ return false;
}
- buf[i] = 0;
- errno = 0;
- *pval = strtoumax (buf, &ep, 10);
- if (c || errno || max_val < *pval)
- FATAL_ERROR ((0, errno, _("Unexpected field value in snapshot file")));
- return c;
-}
+ if (c)
+ FATAL_ERROR ((0, 0,
+ _("%s: byte %s: %s %s followed by invalid byte 0x%02x"),
+ quotearg_colon (listed_incremental_option),
+ offtostr (ftello (fp), offbuf),
+ fieldname, buf, c));
-/* Read from file FP a nul-terminated string and convert it to
- uintmax_t. Return the resulting value in PVAL.
+ *pval = strtosysint (buf, NULL, min_val, max_val);
+ conversion_errno = errno;
- Throw a fatal error if the string cannot be converted or if the
- converted value exceeds MAX_VAL.
-
- Return the last character read or EOF on end of file. */
+ switch (conversion_errno)
+ {
+ case ERANGE:
+ FATAL_ERROR ((0, conversion_errno,
+ _("%s: byte %s: (valid range %s..%s)\n\t%s %s"),
+ quotearg_colon (listed_incremental_option),
+ offtostr (ftello (fp), offbuf),
+ imaxtostr (min_val, minbuf),
+ umaxtostr (max_val, maxbuf), fieldname, buf));
+ default:
+ FATAL_ERROR ((0, conversion_errno,
+ _("%s: byte %s: %s %s"),
+ quotearg_colon (listed_incremental_option),
+ offtostr (ftello (fp), offbuf), fieldname, buf));
+ case 0:
+ break;
+ }
-static int
-read_num (FILE *fp, uintmax_t max_val, uintmax_t *pval)
-{
- return read_unsigned_num (getc (fp), fp, max_val, pval);
+ return true;
}
/* Read from FP two NUL-terminated strings representing a struct
static void
read_timespec (FILE *fp, struct timespec *pval)
{
- int c = getc (fp);
- intmax_t i;
- uintmax_t u;
+ intmax_t s, ns;
- if (c == '-')
+ if (read_num (fp, "sec", TYPE_MINIMUM (time_t), TYPE_MAXIMUM (time_t), &s)
+ && read_num (fp, "nsec", 0, BILLION - 1, &ns))
{
- read_negative_num (fp, TYPE_MINIMUM (time_t), &i);
- c = 0;
- pval->tv_sec = i;
+ pval->tv_sec = s;
+ pval->tv_nsec = ns;
}
else
{
- c = read_unsigned_num (c, fp, TYPE_MAXIMUM (time_t), &u);
- pval->tv_sec = u;
+ FATAL_ERROR ((0, 0, "%s: %s",
+ quotearg_colon (listed_incremental_option),
+ _("Unexpected EOF in snapshot file")));
}
-
- if (c || read_num (fp, BILLION - 1, &u))
- FATAL_ERROR ((0, 0, "%s: %s",
- quotearg_colon (listed_incremental_option),
- _("Unexpected EOF in snapshot file")));
- pval->tv_nsec = u;
}
/* Read incremental snapshot format 2 */
static void
-read_incr_db_2 ()
+read_incr_db_2 (void)
{
- uintmax_t u;
struct obstack stk;
+ char offbuf[INT_BUFSIZE_BOUND (off_t)];
obstack_init (&stk);
for (;;)
{
+ intmax_t i;
struct timespec mtime;
dev_t dev;
ino_t ino;
char *content;
size_t s;
- if (read_num (listed_incremental_stream, 1, &u))
+ if (! read_num (listed_incremental_stream, "nfs", 0, 1, &i))
return; /* Normal return */
- nfs = u;
+ nfs = i;
read_timespec (listed_incremental_stream, &mtime);
- if (read_num (listed_incremental_stream, TYPE_MAXIMUM (dev_t), &u))
+ if (! read_num (listed_incremental_stream, "dev",
+ TYPE_MINIMUM (dev_t), TYPE_MAXIMUM (dev_t), &i))
break;
- dev = u;
+ dev = i;
- if (read_num (listed_incremental_stream, TYPE_MAXIMUM (ino_t), &u))
+ if (! read_num (listed_incremental_stream, "ino",
+ TYPE_MINIMUM (ino_t), TYPE_MAXIMUM (ino_t), &i))
break;
- ino = u;
+ ino = i;
if (read_obstack (listed_incremental_stream, &stk, &s))
break;
while (read_obstack (listed_incremental_stream, &stk, &s) == 0 && s > 1)
;
if (getc (listed_incremental_stream) != 0)
- FATAL_ERROR ((0, 0, "%s: %s",
+ FATAL_ERROR ((0, 0, _("%s: byte %s: %s"),
quotearg_colon (listed_incremental_option),
+ offtostr (ftello (listed_incremental_stream), offbuf),
_("Missing record terminator")));
content = obstack_finish (&stk);
_("Unexpected EOF in snapshot file")));
}
+/* Display (to stdout) the range of allowed values for each field
+ in the snapshot file. The array below should be kept in sync
+ with any changes made to the read_num() calls in the parsing
+ loop inside read_incr_db_2().
+
+ (This function is invoked via the --show-snapshot-field-ranges
+ command line option.) */
+
+struct field_range
+{
+ char const *fieldname;
+ intmax_t min_val;
+ uintmax_t max_val;
+};
+
+static struct field_range const field_ranges[] = {
+ { "nfs", 0, 1 },
+ { "timestamp_sec", TYPE_MINIMUM (time_t), TYPE_MAXIMUM (time_t) },
+ { "timestamp_nsec", 0, BILLION - 1 },
+ { "dev", TYPE_MINIMUM (dev_t), TYPE_MAXIMUM (dev_t) },
+ { "ino", TYPE_MINIMUM (ino_t), TYPE_MAXIMUM (ino_t) },
+ { NULL, 0, 0 }
+};
+
+void
+show_snapshot_field_ranges (void)
+{
+ struct field_range const *p;
+ char minbuf[SYSINT_BUFSIZE];
+ char maxbuf[SYSINT_BUFSIZE];
+
+ printf("This tar's snapshot file field ranges are\n");
+ printf (" (%-15s => [ %s, %s ]):\n\n", "field name", "min", "max");
+
+ for (p=field_ranges; p->fieldname != NULL; p++)
+ {
+ printf (" %-15s => [ %s, %s ],\n", p->fieldname,
+ sysinttostr (p->min_val, p->min_val, p->max_val, minbuf),
+ sysinttostr (p->max_val, p->min_val, p->max_val, maxbuf));
+
+ }
+
+ printf("\n");
+}
+
/* Read incremental snapshot file (directory file).
If the file has older incremental version, make sure that it is processed
correctly and that tar will use the most conservative backup method among
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)
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 (ferror (listed_incremental_stream))
read_error (listed_incremental_option);
- if (buf)
- free (buf);
+ free (buf);
}
/* Output incremental data for the directory ENTRY to the file DATA.
if (DIR_IS_FOUND (directory))
{
- char buf[UINTMAX_STRSIZE_BOUND];
- char *s;
+ char buf[SYSINT_BUFSIZE];
+ char const *s;
s = DIR_IS_NFS (directory) ? "1" : "0";
fwrite (s, 2, 1, fp);
- s = (TYPE_SIGNED (time_t)
- ? imaxtostr (directory->mtime.tv_sec, buf)
- : umaxtostr (directory->mtime.tv_sec, buf));
+ s = sysinttostr (directory->mtime.tv_sec, TYPE_MINIMUM (time_t),
+ TYPE_MAXIMUM (time_t), buf);
fwrite (s, strlen (s) + 1, 1, fp);
- s = umaxtostr (directory->mtime.tv_nsec, buf);
+ s = imaxtostr (directory->mtime.tv_nsec, buf);
fwrite (s, strlen (s) + 1, 1, fp);
- s = umaxtostr (directory->device_number, buf);
+ s = sysinttostr (directory->device_number,
+ TYPE_MINIMUM (dev_t), TYPE_MAXIMUM (dev_t), buf);
fwrite (s, strlen (s) + 1, 1, fp);
- s = umaxtostr (directory->inode_number, buf);
+ s = sysinttostr (directory->inode_number,
+ TYPE_MINIMUM (ino_t), TYPE_MAXIMUM (ino_t), buf);
fwrite (s, strlen (s) + 1, 1, fp);
fwrite (directory->name, strlen (directory->name) + 1, 1, fp);
if (directory->dump)
{
const char *p;
- dumpdir_iter_t itr;
+ struct dumpdir_iter *itr;
for (p = dumpdir_first (directory->dump, 0, &itr);
p;
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 (!is_dumpdir (¤t_stat_info))
return false;
- current_dir = savedir (directory_name);
+ current_dir = tar_savedir (directory_name, 0);
if (!current_dir)
/* The directory doesn't exist now. It'll be created. In any
{
const char *entry;
struct stat st;
- if (p)
- free (p);
+ free (p);
p = new_name (directory_name, cur);
- if (deref_stat (false, p, &st))
+ if (deref_stat (p, &st) != 0)
{
if (errno != ENOENT) /* FIXME: Maybe keep a list of renamed
dirs and check it here? */
}
free (p);
dumpdir_free (dump);
-
+
free (current_dir);
return true;
}
projects / chaz / tar / blobdiff