#include <system.h>
-#if HAVE_UTIME_H
-# include <utime.h>
-#else
-struct utimbuf
- {
- long actime;
- long modtime;
- };
-#endif
-
#include <quotearg.h>
+#include <utimens.h>
#include "common.h"
#include <hash.h>
? ((uintmax_t) 1 << ((digits) * (bits_per_digit))) - 1 \
: (uintmax_t) -1)
+/* The maximum uintmax_t value that can be represented with octal
+ digits and a trailing NUL in BUFFER. */
+#define MAX_OCTAL_VAL(buffer) MAX_VAL_WITH_DIGITS (sizeof (buffer) - 1, LG_8)
+
/* Convert VALUE to an octal representation suitable for tar headers.
Output to buffer WHERE with size SIZE.
The result is undefined if SIZE is 0 or if VALUE is too large to fit. */
while (i);
}
+/* Copy at most LEN bytes from the string SRC to DST. Terminate with
+ NUL unless SRC is LEN or more bytes long. */
+
+static void
+tar_copy_str (char *dst, const char *src, size_t len)
+{
+ size_t i;
+ for (i = 0; i < len; i++)
+ if (! (dst[i] = src[i]))
+ break;
+}
+
+/* Same as tar_copy_str, but always terminate with NUL if using
+ is OLDGNU format */
+
+static void
+tar_name_copy_str (char *dst, const char *src, size_t len)
+{
+ tar_copy_str (dst, src, len);
+ if (archive_format == OLDGNU_FORMAT)
+ dst[len-1] = 0;
+}
+
/* Convert NEGATIVE VALUE to a base-256 representation suitable for
tar headers. NEGATIVE is 1 if VALUE was negative before being cast
to uintmax_t, 0 otherwise. Output to buffer WHERE with size SIZE.
}
void
-string_to_chars (char *str, char *p, size_t s)
+string_to_chars (char const *str, char *p, size_t s)
{
- strncpy (p, str, s);
- p[s-1] = 0;
+ tar_copy_str (p, str, s);
+ p[s - 1] = '\0';
}
\f
-/* A file is not dumpable if
+/* A file is considered dumpable if it is sparse and both --sparse and --totals
+ are specified.
+ Otherwise, it is dumpable unless any of the following conditions occur:
+
a) it is empty *and* world-readable, or
b) current archive is /dev/null */
bool
file_dumpable_p (struct tar_stat_info *st)
{
- return !(dev_null_output
- || (st->archive_file_size == 0
- && (st->stat.st_mode & MODE_R) == MODE_R));
+ if (dev_null_output)
+ return totals_option && sparse_option && sparse_file_p (st);
+ return !(st->archive_file_size == 0
+ && (st->stat.st_mode & MODE_R) == MODE_R);
}
\f
set_next_block_after (pointer);
}
-/* Copy at most LEN bytes from SRC to DST. Terminate with NUL unless
- SRC is LEN characters long */
-static void
-tar_copy_str (char *dst, const char *src, size_t len)
-{
- dst[len-1] = 0;
- strncpy (dst, src, len);
-}
-
-/* Same as tar_copy_str, but always terminate with NUL if using
- is OLDGNU format */
-static void
-tar_name_copy_str (char *dst, const char *src, size_t len)
-{
- tar_copy_str (dst, src, len);
- if (archive_format == OLDGNU_FORMAT)
- dst[len-1] = 0;
-}
-
/* Write a "private" header */
union block *
start_private_header (const char *name, size_t size)
UID_TO_CHARS (getuid (), header->header.uid);
GID_TO_CHARS (getgid (), header->header.gid);
MAJOR_TO_CHARS (0, header->header.devmajor);
- MAJOR_TO_CHARS (0, header->header.devminor);
+ MINOR_TO_CHARS (0, header->header.devminor);
strncpy (header->header.magic, TMAGIC, TMAGLEN);
strncpy (header->header.version, TVERSION, TVERSLEN);
return header;
xheader_store ("path", st, NULL);
return write_short_name (st);
}
- else if ((archive_format == OLDGNU_FORMAT
- && OLDGNU_NAME_FIELD_SIZE < strlen (st->file_name))
- || NAME_FIELD_SIZE < strlen (st->file_name))
+ else if (NAME_FIELD_SIZE - (archive_format == OLDGNU_FORMAT)
+ < strlen (st->file_name))
return write_long_name (st);
else
return write_short_name (st);
else
MODE_TO_CHARS (st->stat.st_mode, header->header.mode);
- if (st->stat.st_uid > MAXOCTAL7 && archive_format == POSIX_FORMAT)
- xheader_store ("uid", st, NULL);
- else
- UID_TO_CHARS (st->stat.st_uid, header->header.uid);
+ {
+ uid_t uid = st->stat.st_uid;
+ if (archive_format == POSIX_FORMAT
+ && MAX_OCTAL_VAL (header->header.uid) < uid)
+ {
+ xheader_store ("uid", st, NULL);
+ uid = 0;
+ }
+ UID_TO_CHARS (uid, header->header.uid);
+ }
- if (st->stat.st_gid > MAXOCTAL7 && archive_format == POSIX_FORMAT)
- xheader_store ("gid", st, NULL);
- else
- GID_TO_CHARS (st->stat.st_gid, header->header.gid);
+ {
+ gid_t gid = st->stat.st_gid;
+ if (archive_format == POSIX_FORMAT
+ && MAX_OCTAL_VAL (header->header.gid) < gid)
+ {
+ xheader_store ("gid", st, NULL);
+ gid = 0;
+ }
+ GID_TO_CHARS (gid, header->header.gid);
+ }
- if (st->stat.st_size > MAXOCTAL11 && archive_format == POSIX_FORMAT)
- xheader_store ("size", st, NULL);
- else
- OFF_TO_CHARS (st->stat.st_size, header->header.size);
+ {
+ off_t size = st->stat.st_size;
+ if (archive_format == POSIX_FORMAT
+ && MAX_OCTAL_VAL (header->header.size) < size)
+ {
+ xheader_store ("size", st, NULL);
+ size = 0;
+ }
+ OFF_TO_CHARS (size, header->header.size);
+ }
- TIME_TO_CHARS (st->stat.st_mtime, header->header.mtime);
+ {
+ struct timespec mtime = st->mtime;
+ if (archive_format == POSIX_FORMAT)
+ {
+ if (MAX_OCTAL_VAL (header->header.mtime) < mtime.tv_sec
+ || mtime.tv_nsec != 0)
+ xheader_store ("mtime", st, NULL);
+ if (MAX_OCTAL_VAL (header->header.mtime) < mtime.tv_sec)
+ mtime.tv_sec = 0;
+ }
+ TIME_TO_CHARS (mtime.tv_sec, header->header.mtime);
+ }
/* FIXME */
if (S_ISCHR (st->stat.st_mode)
|| S_ISBLK (st->stat.st_mode))
{
- st->devmajor = major (st->stat.st_rdev);
- st->devminor = minor (st->stat.st_rdev);
+ major_t devmajor = major (st->stat.st_rdev);
+ minor_t devminor = minor (st->stat.st_rdev);
- if (st->devmajor > MAXOCTAL7 && archive_format == POSIX_FORMAT)
- xheader_store ("devmajor", st, NULL);
- else
- MAJOR_TO_CHARS (st->devmajor, header->header.devmajor);
+ if (archive_format == POSIX_FORMAT
+ && MAX_OCTAL_VAL (header->header.devmajor) < devmajor)
+ {
+ xheader_store ("devmajor", st, NULL);
+ devmajor = 0;
+ }
+ MAJOR_TO_CHARS (devmajor, header->header.devmajor);
- if (st->devminor > MAXOCTAL7 && archive_format == POSIX_FORMAT)
- xheader_store ("devminor", st, NULL);
- else
- MAJOR_TO_CHARS (st->devminor, header->header.devminor);
+ if (archive_format == POSIX_FORMAT
+ && MAX_OCTAL_VAL (header->header.devminor) < devminor)
+ {
+ xheader_store ("devminor", st, NULL);
+ devminor = 0;
+ }
+ MINOR_TO_CHARS (devminor, header->header.devminor);
}
else if (archive_format != GNU_FORMAT && archive_format != OLDGNU_FORMAT)
{
else if (incremental_option)
if (archive_format == OLDGNU_FORMAT || archive_format == GNU_FORMAT)
{
- TIME_TO_CHARS (st->stat.st_atime, header->oldgnu_header.atime);
- TIME_TO_CHARS (st->stat.st_ctime, header->oldgnu_header.ctime);
+ TIME_TO_CHARS (st->atime.tv_sec, header->oldgnu_header.atime);
+ TIME_TO_CHARS (st->ctime.tv_sec, header->oldgnu_header.ctime);
}
header->header.typeflag = archive_format == V7_FORMAT ? AREGTYPE : REGTYPE;
&& (strlen (st->uname) > UNAME_FIELD_SIZE
|| !string_ascii_p (st->uname)))
xheader_store ("uname", st, NULL);
- else
- UNAME_TO_CHARS (st->uname, header->header.uname);
+ UNAME_TO_CHARS (st->uname, header->header.uname);
if (archive_format == POSIX_FORMAT
&& (strlen (st->gname) > GNAME_FIELD_SIZE
|| !string_ascii_p (st->gname)))
xheader_store ("gname", st, NULL);
- else
- GNAME_TO_CHARS (st->gname, header->header.gname);
+ GNAME_TO_CHARS (st->gname, header->header.gname);
}
return header;
size_left -= count;
if (count)
set_next_block_after (blk + (bufsize - 1) / BLOCKSIZE);
-
+
if (count != bufsize)
{
char buf[UINTMAX_STRSIZE_BOUND];
}
static void
-dump_regular_finish (int fd, struct tar_stat_info *st, time_t original_ctime)
+dump_regular_finish (int fd, struct tar_stat_info *st,
+ struct timespec original_ctime)
{
if (fd >= 0)
{
{
stat_diag (st->orig_file_name);
}
- else if (final_stat.st_ctime != original_ctime)
+ else if (timespec_cmp (get_stat_ctime (&final_stat), original_ctime)
+ != 0)
{
WARN ((0, 0, _("%s: file changed as we read it"),
quotearg_colon (st->orig_file_name)));
block_ordinal = current_block_ordinal ();
assign_string (&st->link_name, link_name);
- if ((archive_format == OLDGNU_FORMAT
- && OLDGNU_NAME_FIELD_SIZE < strlen (link_name))
- || NAME_FIELD_SIZE < strlen (link_name))
+ if (NAME_FIELD_SIZE - (archive_format == OLDGNU_FORMAT)
+ < strlen (link_name))
write_long_link (st);
st->stat.st_size = 0;
{
union block *header;
char type;
- time_t original_ctime;
- struct utimbuf restore_times;
+ struct timespec original_ctime;
+ struct timespec restore_times[2];
off_t block_ordinal = -1;
if (interactive_option && !confirm ("add", p))
return;
assign_string (&st->orig_file_name, p);
- assign_string (&st->file_name,
+ assign_string (&st->file_name,
safer_name_suffix (p, false, absolute_names_option));
if (deref_stat (dereference_option, p, &st->stat) != 0)
return;
}
st->archive_file_size = st->stat.st_size;
- sys_stat_nanoseconds (st);
- original_ctime = st->stat.st_ctime;
- restore_times.actime = st->stat.st_atime;
- restore_times.modtime = st->stat.st_mtime;
+ st->atime = restore_times[0] = get_stat_atime (&st->stat);
+ st->mtime = restore_times[1] = get_stat_mtime (&st->stat);
+ st->ctime = original_ctime = get_stat_ctime (&st->stat);
#ifdef S_ISHIDDEN
if (S_ISHIDDEN (st->stat.st_mode))
if (!(incremental_option && !is_individual_file (p))
&& !S_ISDIR (st->stat.st_mode)
- && OLDER_STAT_TIME (st->stat, m)
- && (!after_date_option || OLDER_STAT_TIME (st->stat, c)))
+ && OLDER_TAR_STAT_TIME (*st, m)
+ && (!after_date_option || OLDER_TAR_STAT_TIME (*st, c)))
{
if (!incremental_option && verbose_option)
WARN ((0, 0, _("%s: file is unchanged; not dumped"),
{
dump_dir (st, top_level, parent_device);
if (atime_preserve_option)
- utime (p, &restore_times);
+ utimens (p, restore_times);
return;
}
else
else
fd = -1;
- if (sparse_option && sparse_file_p (st))
+ if (fd != -1 && sparse_option && sparse_file_p (st))
{
status = sparse_dump_file (fd, st);
if (status == dump_status_not_implemented)
}
if (atime_preserve_option)
- utime (st->orig_file_name, &restore_times);
+ utimens (st->orig_file_name, restore_times);
file_count_links (st);
return;
}
}
buffer[size] = '\0';
assign_string (&st->link_name, buffer);
- if ((archive_format == OLDGNU_FORMAT && size > OLDGNU_NAME_FIELD_SIZE)
- || size > NAME_FIELD_SIZE)
+ if (NAME_FIELD_SIZE - (archive_format == OLDGNU_FORMAT) < size)
write_long_link (st);
block_ordinal = current_block_ordinal ();
struct tar_stat_info st;
tar_stat_init (&st);
dump_file0 (&st, p, top_level, parent_device);
+ if (listed_incremental_option)
+ update_parent_directory (p);
tar_stat_destroy (&st);
}
projects / chaz / tar / blobdiff