| 1 |
/* This file is part of GNU Tar |
/* POSIX extended and STAR headers. |
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Copyright (C) 2003 Free Software Foundation, Inc. |
Copyright (C) 2003 Free Software Foundation, Inc. |
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| 29 |
#define obstack_chunk_free free |
#define obstack_chunk_free free |
| 30 |
#include <obstack.h> |
#include <obstack.h> |
| 31 |
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/* Forward declarations */ |
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static void dummy_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void dummy_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void atime_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void atime_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void gid_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void gid_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void gname_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void gname_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void linkpath_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void linkpath_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void mtime_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void mtime_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void ctime_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void ctime_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void path_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void path_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void size_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void size_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void uid_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void uid_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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static void uname_coder (struct tar_stat_info *st, char *keyword, |
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struct xheader *xhdr); |
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static void uname_decoder (struct tar_stat_info *st, char *keyword, char *arg); |
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/* General Interface */ |
/* General Interface */ |
| 33 |
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struct xhdr_tab |
struct xhdr_tab |
| 35 |
{ |
{ |
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char *keyword; |
char const *keyword; |
| 37 |
void (*coder) (struct tar_stat_info *st, char *keyword, struct xheader *xhdr); |
void (*coder) (struct tar_stat_info const *, char const *, struct xheader *); |
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void (*decoder) (struct tar_stat_info *st, char *keyword, char *arg); |
void (*decoder) (struct tar_stat_info *, char const *); |
| 39 |
}; |
}; |
| 40 |
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struct xhdr_tab xhdr_tab[] = { |
static struct xhdr_tab const xhdr_tab[]; |
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{ "atime", atime_coder, atime_decoder }, |
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{ "comment", dummy_coder, dummy_decoder }, |
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{ "charset", dummy_coder, dummy_decoder }, |
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{ "ctime", ctime_coder, ctime_decoder }, |
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{ "gid", gid_coder, gid_decoder }, |
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{ "gname", gname_coder, gname_decoder }, |
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{ "linkpath", linkpath_coder, linkpath_decoder }, |
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{ "mtime", mtime_coder, mtime_decoder }, |
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{ "path", path_coder, path_decoder }, |
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{ "size", size_coder, size_decoder }, |
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{ "uid", uid_coder, uid_decoder }, |
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{ "uname", uname_coder, uname_decoder }, |
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#if 0 /* GNU private keywords (not yet implemented) */ |
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/* Sparse file handling */ |
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{ "GNU.sparse.offset", sparse_offset_coder, sparse_offset_decoder }, |
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{ "GNU.sparse.numbytes", sparse_numbytes_coder, sparse_numbytes_decoder }, |
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/* The next directory entry actually contains the names of files that were |
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in the directory at the time the dump was made. Supersedes |
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GNUTYPE_DUMPDIR header type */ |
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{ "GNU.dumpdir", dumpdir_coder, dumpdir_decoder }, |
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/* Keeps the tape/volume header. May be present only in the global headers. |
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Equivalent to GNUTYPE_VOLHDR */ |
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{ "GNU.volume.header", volume_header_coder, volume_header_decoder }, |
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/* These may be present in a first global header of the archive. They |
static struct xhdr_tab const * |
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provide the same functionality as GNUTYPE_MULTIVOL header. |
locate_handler (char const *keyword) |
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The GNU.volume.size keeps the real_s_sizeleft value (which is |
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otherwise kept in the size field of a multivolume header). |
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The GNU.volume.offset keeps the offset of the start of this |
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volume (otherwise kept in oldgnu_header.offset */ |
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{ "GNU.volume.size", volume_size_coder, volume_size_decoder }, |
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{ "GNU.volume.offset", volume_offset_coder, volume_offset_decoder }, |
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#endif |
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{ NULL }, |
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}; |
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static struct xhdr_tab * |
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locate_handler (char *keyword) |
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{ |
{ |
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struct xhdr_tab *p; |
struct xhdr_tab const *p; |
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for (p = xhdr_tab; p->keyword; p++) |
for (p = xhdr_tab; p->keyword; p++) |
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if (strcmp (p->keyword, keyword) == 0) |
if (strcmp (p->keyword, keyword) == 0) |
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return NULL; |
return NULL; |
| 52 |
} |
} |
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static int |
static bool |
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decode_record (char **p, struct tar_stat_info *st) |
decode_record (char **p, struct tar_stat_info *st) |
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{ |
{ |
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size_t len; |
size_t len; |
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char *keyword, *eqp; |
char const *keyword; |
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char *eqp; |
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char *start = *p; |
char *start = *p; |
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struct xhdr_tab *t; |
struct xhdr_tab const *t; |
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if (**p == 0) |
if (**p == 0) |
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return 1; |
return true; |
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len = strtoul (*p, p, 10); |
len = strtoul (*p, p, 10); |
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if (**p != ' ') |
if (**p != ' ') |
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{ |
{ |
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ERROR ((0, 0, _("Malformed extended headed"))); |
ERROR ((0, 0, _("Malformed extended header"))); |
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return 1; |
return true; |
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} |
} |
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keyword = ++*p; |
keyword = ++*p; |
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for (;*p < start + len; ++*p) |
for (;*p < start + len; ++*p) |
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if (**p == '=') |
if (**p == '=') |
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if (**p != '=') |
if (**p != '=') |
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{ |
{ |
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ERROR ((0, 0, _("Malformed extended headed"))); |
ERROR ((0, 0, _("Malformed extended header"))); |
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return 1; |
return true; |
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} |
} |
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eqp = *p; |
eqp = *p; |
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char *value; |
char *value; |
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value = ++*p; |
value = ++*p; |
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endc = start[len-1]; |
endc = start[len-1]; |
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start[len-1] = 0; |
start[len-1] = 0; |
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t->decoder (st, keyword, value); |
t->decoder (st, value); |
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start[len-1] = endc; |
start[len-1] = endc; |
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} |
} |
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*eqp = '='; |
*eqp = '='; |
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*p = &start[len]; |
*p = &start[len]; |
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return 0; |
return false; |
| 102 |
} |
} |
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void |
void |
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xheader_decode (struct tar_stat_info *st) |
xheader_decode (struct tar_stat_info *st) |
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{ |
{ |
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char *p, *endp; |
char *p = extended_header.buffer; |
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char *endp = &extended_header.buffer[extended_header.size-1]; |
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p = extended_header.buffer; |
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endp = &extended_header.buffer[extended_header.size-1]; |
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while (p < endp) |
while (p < endp) |
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if (decode_record (&p, st)) |
if (decode_record (&p, st)) |
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} |
} |
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void |
void |
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xheader_store (char *keyword, struct tar_stat_info *st) |
xheader_store (char const *keyword, struct tar_stat_info const *st) |
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{ |
{ |
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struct xhdr_tab *t; |
struct xhdr_tab const *t; |
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if (extended_header.buffer) |
if (extended_header.buffer) |
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return; |
return; |
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return; |
return; |
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if (!extended_header.stk) |
if (!extended_header.stk) |
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{ |
{ |
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extended_header.stk = xmalloc (sizeof (*extended_header.stk)); |
extended_header.stk = xmalloc (sizeof *extended_header.stk); |
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obstack_init (extended_header.stk); |
obstack_init (extended_header.stk); |
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} |
} |
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t->coder (st, keyword, &extended_header); |
t->coder (st, keyword, &extended_header); |
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{ |
{ |
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size_t i, j; |
size_t i, j; |
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size_t nblocks; |
size_t nblocks; |
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free (extended_header.buffer); |
free (extended_header.buffer); |
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extended_header.size = size; |
extended_header.size = size; |
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nblocks = (size + BLOCKSIZE - 1) / BLOCKSIZE; |
nblocks = (size + BLOCKSIZE - 1) / BLOCKSIZE; |
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for (i = j = 0; i < nblocks; i++) |
for (i = j = 0; i < nblocks; i++) |
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{ |
{ |
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size_t len; |
size_t len; |
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p = find_next_block (); |
p = find_next_block (); |
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len = size; |
len = size; |
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if (len > BLOCKSIZE) |
if (len > BLOCKSIZE) |
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} |
} |
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} |
} |
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size_t |
static size_t |
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format_uintmax (uintmax_t val, char *buf, size_t s) |
format_uintmax (uintmax_t val, char *buf, size_t s) |
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{ |
{ |
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if (!buf) |
if (!buf) |
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else |
else |
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{ |
{ |
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char *p = buf + s - 1; |
char *p = buf + s - 1; |
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do |
do |
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{ |
{ |
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*p-- = val % 10 + '0'; |
*p-- = val % 10 + '0'; |
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return s; |
return s; |
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} |
} |
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void |
static void |
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xheader_print (struct xheader *xhdr, char *keyword, char *value) |
xheader_print (struct xheader *xhdr, char const *keyword, char const *value) |
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{ |
{ |
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size_t len = strlen (keyword) + strlen (value) + 3; /* ' ' + '=' + '\n' */ |
size_t len = strlen (keyword) + strlen (value) + 3; /* ' ' + '=' + '\n' */ |
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size_t p, n = 0; |
size_t p, n = 0; |
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char nbuf[100]; |
char nbuf[100]; |
| 193 |
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do |
do |
| 195 |
{ |
{ |
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p = n; |
p = n; |
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if (xhdr->stk) |
if (xhdr->stk) |
| 222 |
{ |
{ |
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obstack_free (xhdr->stk, NULL); |
obstack_free (xhdr->stk, NULL); |
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free (xhdr->stk); |
free (xhdr->stk); |
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xhdr->stk = NULL; |
xhdr->stk = NULL; |
| 226 |
} |
} |
| 227 |
else |
else |
| 233 |
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/* Implementations */ |
/* Implementations */ |
| 235 |
static void |
static void |
| 236 |
code_string (char *string, char *keyword, struct xheader *xhdr) |
code_string (char const *string, char const *keyword, struct xheader *xhdr) |
| 237 |
{ |
{ |
| 238 |
xheader_print (xhdr, keyword, string); |
xheader_print (xhdr, keyword, string); |
| 239 |
} |
} |
| 240 |
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static void |
static void |
| 242 |
code_time (time_t t, char *keyword, struct xheader *xhdr) |
code_time (time_t t, char const *keyword, struct xheader *xhdr) |
| 243 |
{ |
{ |
| 244 |
char sbuf[100]; |
char sbuf[100]; |
| 245 |
size_t s = format_uintmax (t, NULL, 0); |
size_t s = format_uintmax (t, NULL, 0); |
| 251 |
} |
} |
| 252 |
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| 253 |
static void |
static void |
| 254 |
code_num (uintmax_t value, char *keyword, struct xheader *xhdr) |
code_num (uintmax_t value, char const *keyword, struct xheader *xhdr) |
| 255 |
{ |
{ |
| 256 |
char sbuf[100]; |
char sbuf[100]; |
| 257 |
size_t s = format_uintmax (value, NULL, 0); |
size_t s = format_uintmax (value, NULL, 0); |
| 258 |
format_uintmax (value, sbuf, s); |
format_uintmax (value, sbuf, s); |
| 259 |
sbuf[s] = 0; |
sbuf[s] = 0; |
| 261 |
} |
} |
| 262 |
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|
| 263 |
static void |
static void |
| 264 |
dummy_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
dummy_coder (struct tar_stat_info const *st, char const *keyword, |
| 265 |
|
struct xheader *xhdr) |
| 266 |
{ |
{ |
| 267 |
} |
} |
| 268 |
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|
| 269 |
static void |
static void |
| 270 |
dummy_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
dummy_decoder (struct tar_stat_info *st, char const *arg) |
| 271 |
{ |
{ |
| 272 |
} |
} |
| 273 |
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|
| 274 |
static void |
static void |
| 275 |
atime_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
atime_coder (struct tar_stat_info const *st, char const *keyword, |
| 276 |
|
struct xheader *xhdr) |
| 277 |
{ |
{ |
| 278 |
code_time (st->stat.st_atime, keyword, xhdr); |
code_time (st->stat.st_atime, keyword, xhdr); |
| 279 |
} |
} |
| 280 |
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|
| 281 |
static void |
static void |
| 282 |
atime_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
atime_decoder (struct tar_stat_info *st, char const *arg) |
| 283 |
{ |
{ |
| 284 |
st->stat.st_atime = strtoul (arg, NULL, 0); |
st->stat.st_atime = strtoul (arg, NULL, 0); |
| 285 |
} |
} |
| 286 |
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|
| 287 |
static void |
static void |
| 288 |
gid_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
gid_coder (struct tar_stat_info const *st, char const *keyword, |
| 289 |
|
struct xheader *xhdr) |
| 290 |
{ |
{ |
| 291 |
code_num (st->stat.st_gid, keyword, xhdr); |
code_num (st->stat.st_gid, keyword, xhdr); |
| 292 |
} |
} |
| 293 |
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|
| 294 |
static void |
static void |
| 295 |
gid_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
gid_decoder (struct tar_stat_info *st, char const *arg) |
| 296 |
{ |
{ |
| 297 |
st->stat.st_gid = strtoul (arg, NULL, 0); |
st->stat.st_gid = strtoul (arg, NULL, 0); |
| 298 |
} |
} |
| 299 |
|
|
| 300 |
static void |
static void |
| 301 |
gname_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
gname_coder (struct tar_stat_info const *st, char const *keyword, |
| 302 |
|
struct xheader *xhdr) |
| 303 |
{ |
{ |
| 304 |
code_string (st->gname, keyword, xhdr); |
code_string (st->gname, keyword, xhdr); |
| 305 |
} |
} |
| 306 |
|
|
| 307 |
static void |
static void |
| 308 |
gname_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
gname_decoder (struct tar_stat_info *st, char const *arg) |
| 309 |
{ |
{ |
| 310 |
assign_string (&st->gname, arg); |
assign_string (&st->gname, arg); |
| 311 |
} |
} |
| 312 |
|
|
| 313 |
static void |
static void |
| 314 |
linkpath_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
linkpath_coder (struct tar_stat_info const *st, char const *keyword, |
| 315 |
|
struct xheader *xhdr) |
| 316 |
{ |
{ |
| 317 |
code_string (st->link_name, keyword, xhdr); |
code_string (st->link_name, keyword, xhdr); |
| 318 |
} |
} |
| 319 |
|
|
| 320 |
static void |
static void |
| 321 |
linkpath_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
linkpath_decoder (struct tar_stat_info *st, char const *arg) |
| 322 |
{ |
{ |
| 323 |
assign_string (&st->link_name, arg); |
assign_string (&st->link_name, arg); |
| 324 |
} |
} |
| 325 |
|
|
| 326 |
static void |
static void |
| 327 |
ctime_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
ctime_coder (struct tar_stat_info const *st, char const *keyword, |
| 328 |
|
struct xheader *xhdr) |
| 329 |
{ |
{ |
| 330 |
code_time (st->stat.st_ctime, keyword, xhdr); |
code_time (st->stat.st_ctime, keyword, xhdr); |
| 331 |
} |
} |
| 332 |
|
|
| 333 |
static void |
static void |
| 334 |
ctime_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
ctime_decoder (struct tar_stat_info *st, char const *arg) |
| 335 |
{ |
{ |
| 336 |
st->stat.st_ctime = strtoul (arg, NULL, 0); |
st->stat.st_ctime = strtoul (arg, NULL, 0); |
| 337 |
} |
} |
| 338 |
|
|
| 339 |
static void |
static void |
| 340 |
mtime_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
mtime_coder (struct tar_stat_info const *st, char const *keyword, |
| 341 |
|
struct xheader *xhdr) |
| 342 |
{ |
{ |
| 343 |
code_time (st->stat.st_mtime, keyword, xhdr); |
code_time (st->stat.st_mtime, keyword, xhdr); |
| 344 |
} |
} |
| 345 |
|
|
| 346 |
static void |
static void |
| 347 |
mtime_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
mtime_decoder (struct tar_stat_info *st, char const *arg) |
| 348 |
{ |
{ |
| 349 |
st->stat.st_mtime = strtoul (arg, NULL, 0); |
st->stat.st_mtime = strtoul (arg, NULL, 0); |
| 350 |
} |
} |
| 351 |
|
|
| 352 |
static void |
static void |
| 353 |
path_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
path_coder (struct tar_stat_info const *st, char const *keyword, |
| 354 |
|
struct xheader *xhdr) |
| 355 |
{ |
{ |
| 356 |
code_string (st->file_name, keyword, xhdr); |
code_string (st->file_name, keyword, xhdr); |
| 357 |
} |
} |
| 358 |
|
|
| 359 |
static void |
static void |
| 360 |
path_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
path_decoder (struct tar_stat_info *st, char const *arg) |
| 361 |
{ |
{ |
| 362 |
assign_string (&st->orig_file_name, arg); |
assign_string (&st->orig_file_name, arg); |
| 363 |
assign_string (&st->file_name, arg); |
assign_string (&st->file_name, arg); |
| 365 |
} |
} |
| 366 |
|
|
| 367 |
static void |
static void |
| 368 |
size_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
size_coder (struct tar_stat_info const *st, char const *keyword, |
| 369 |
|
struct xheader *xhdr) |
| 370 |
{ |
{ |
| 371 |
code_num (st->stat.st_size, keyword, xhdr); |
code_num (st->stat.st_size, keyword, xhdr); |
| 372 |
} |
} |
| 373 |
|
|
| 374 |
static void |
static void |
| 375 |
size_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
size_decoder (struct tar_stat_info *st, char const *arg) |
| 376 |
{ |
{ |
| 377 |
st->stat.st_size = strtoul (arg, NULL, 0); |
st->stat.st_size = strtoul (arg, NULL, 0); |
| 378 |
} |
} |
| 379 |
|
|
| 380 |
static void |
static void |
| 381 |
uid_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
uid_coder (struct tar_stat_info const *st, char const *keyword, |
| 382 |
|
struct xheader *xhdr) |
| 383 |
{ |
{ |
| 384 |
code_num (st->stat.st_uid, keyword, xhdr); |
code_num (st->stat.st_uid, keyword, xhdr); |
| 385 |
} |
} |
| 386 |
|
|
| 387 |
static void |
static void |
| 388 |
uid_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
uid_decoder (struct tar_stat_info *st, char const *arg) |
| 389 |
{ |
{ |
| 390 |
st->stat.st_uid = strtoul (arg, NULL, 0); |
st->stat.st_uid = strtoul (arg, NULL, 0); |
| 391 |
} |
} |
| 392 |
|
|
| 393 |
static void |
static void |
| 394 |
uname_coder (struct tar_stat_info *st, char *keyword, struct xheader *xhdr) |
uname_coder (struct tar_stat_info const *st, char const *keyword, |
| 395 |
|
struct xheader *xhdr) |
| 396 |
{ |
{ |
| 397 |
code_string (st->uname, keyword, xhdr); |
code_string (st->uname, keyword, xhdr); |
| 398 |
} |
} |
| 399 |
|
|
| 400 |
static void |
static void |
| 401 |
uname_decoder (struct tar_stat_info *st, char *keyword, char *arg) |
uname_decoder (struct tar_stat_info *st, char const *arg) |
| 402 |
{ |
{ |
| 403 |
assign_string (&st->uname, arg); |
assign_string (&st->uname, arg); |
| 404 |
} |
} |
| 405 |
|
|
| 406 |
|
static struct xhdr_tab const xhdr_tab[] = { |
| 407 |
|
{ "atime", atime_coder, atime_decoder }, |
| 408 |
|
{ "comment", dummy_coder, dummy_decoder }, |
| 409 |
|
{ "charset", dummy_coder, dummy_decoder }, |
| 410 |
|
{ "ctime", ctime_coder, ctime_decoder }, |
| 411 |
|
{ "gid", gid_coder, gid_decoder }, |
| 412 |
|
{ "gname", gname_coder, gname_decoder }, |
| 413 |
|
{ "linkpath", linkpath_coder, linkpath_decoder}, |
| 414 |
|
{ "mtime", mtime_coder, mtime_decoder }, |
| 415 |
|
{ "path", path_coder, path_decoder }, |
| 416 |
|
{ "size", size_coder, size_decoder }, |
| 417 |
|
{ "uid", uid_coder, uid_decoder }, |
| 418 |
|
{ "uname", uname_coder, uname_decoder }, |
| 419 |
|
|
| 420 |
|
#if 0 /* GNU private keywords (not yet implemented) */ |
| 421 |
|
/* Sparse file handling */ |
| 422 |
|
{ "GNU.sparse.offset", sparse_offset_coder, sparse_offset_decoder }, |
| 423 |
|
{ "GNU.sparse.numbytes", sparse_numbytes_coder, sparse_numbytes_decoder }, |
| 424 |
|
|
| 425 |
|
/* The next directory entry actually contains the names of files |
| 426 |
|
that were in the directory at the time the dump was made. |
| 427 |
|
Supersedes GNUTYPE_DUMPDIR header type. */ |
| 428 |
|
{ "GNU.dumpdir", dumpdir_coder, dumpdir_decoder }, |
| 429 |
|
|
| 430 |
|
/* Keeps the tape/volume header. May be present only in the global headers. |
| 431 |
|
Equivalent to GNUTYPE_VOLHDR. */ |
| 432 |
|
{ "GNU.volume.header", volume_header_coder, volume_header_decoder }, |
| 433 |
|
|
| 434 |
|
/* These may be present in a first global header of the archive. |
| 435 |
|
They provide the same functionality as GNUTYPE_MULTIVOL header. |
| 436 |
|
The GNU.volume.size keeps the real_s_sizeleft value, which is |
| 437 |
|
otherwise kept in the size field of a multivolume header. The |
| 438 |
|
GNU.volume.offset keeps the offset of the start of this volume, |
| 439 |
|
otherwise kept in oldgnu_header.offset. */ |
| 440 |
|
{ "GNU.volume.size", volume_size_coder, volume_size_decoder }, |
| 441 |
|
{ "GNU.volume.offset", volume_offset_coder, volume_offset_decoder }, |
| 442 |
|
#endif |
| 443 |
|
|
| 444 |
|
{ NULL, NULL, NULL } |
| 445 |
|
}; |