Author: Svante Signell <svante.signell@telia.com>
Author: Petter Reinholdtsen <pere@hungry.com>
Author: Magnus Holmgren <magnus@debian.org>
Bug-Debian: http://bugs.debian.org/
657116
Description: Fix FTBFS on Hurd by dynamically allocating path names.
Depends on no_static_buffers.patch, which introduced the th_pathname field.
--- a/compat/basename.c
+++ b/compat/basename.c
@@ -34,13 +34,25 @@ static char rcsid[] = "$OpenBSD: basenam
#include <errno.h>
#include <string.h>
#include <sys/param.h>
+#include <stdlib.h>
char *
openbsd_basename
(path
)
const char *path;
{
- static char bname[MAXPATHLEN];
+ static char *bname = NULL;
+ static size_t allocated = 0;
register const char *endp, *startp;
+ int len = 0;
+
+ if (!allocated) {
+ allocated = 64;
+ bname = malloc(allocated);
+ if (!bname) {
+ allocated = 0;
+ return NULL;
+ }
+ }
/* Empty or NULL string gets treated as "." */
if
(path == NULL || *path == '\
0'
) {
@@ -64,11 +76,19 @@ openbsd_basename(path)
while
(startp > path && *
(startp -
1) != '/'
)
startp--;
- if (endp - startp + 1 > sizeof(bname)) {
- errno = ENAMETOOLONG;
- return(NULL);
+ len = endp - startp + 1;
+
+ if (len + 1 > allocated) {
+ size_t new_allocated = 2*(len+1);
+ void *new_bname = malloc(new_allocated);
+ if (!new_bname)
+ return NULL;
+ allocated = new_allocated;
+ free(bname);
+ bname = new_bname;
}
- (void)strncpy(bname, startp, endp - startp + 1);
- bname[endp - startp + 1] = '\0';
+
+ (void)strncpy(bname, startp, len);
+ bname[len] = '\0';
return
(bname
);
}
--- a/compat/dirname.c
+++ b/compat/dirname.c
@@ -34,13 +34,25 @@ static char rcsid[] = "$OpenBSD: dirname
#include <errno.h>
#include <string.h>
#include <sys/param.h>
+#include <stdlib.h>
char *
openbsd_dirname
(path
)
const char *path;
{
- static char bname[MAXPATHLEN];
+ static char *bname = NULL;
+ static size_t allocated = 0;
register const char *endp;
+ int len;
+
+ if (!allocated) {
+ allocated = 64;
+ bname = malloc(allocated);
+ if (!bname) {
+ allocated = 0;
+ return NULL;
+ }
+ }
/* Empty or NULL string gets treated as "." */
if
(path == NULL || *path == '\
0'
) {
--- a/lib/append.c
+++ b/lib/append.c
@@ -38,7 +38,7 @@ typedef struct tar_dev tar_dev_t;
struct tar_ino
{
ino_t ti_ino;
- char ti_name[MAXPATHLEN];
+ char ti_name[];
};
typedef struct tar_ino tar_ino_t;
@@ -61,7 +61,7 @@ tar_append_file(TAR *t, const char *real
libtar_hashptr_t hp;
tar_dev_t *td = NULL;
tar_ino_t *ti = NULL;
- char path[MAXPATHLEN];
+ char *path = NULL;
#ifdef DEBUG
printf
("==> tar_append_file
(TAR=0x%lx
(\"%s\"
), realname=\"%s\", "
@@ -126,34 +126,39 @@ tar_append_file(TAR *t, const char *real
}
else
{
+ const char *name;
#ifdef DEBUG
printf
("+++ adding entry: device
(0x%lx,0x%lx
), inode %ld "
"
(\"%s\"
)...\n", major
(s.st_dev
), minor
(s.st_dev
),
s.st_ino, realname
);
#endif
- ti = (tar_ino_t *)calloc(1, sizeof(tar_ino_t));
+ name = savename ? savename : realname;
+ ti = (tar_ino_t *)calloc(1, sizeof(tar_ino_t) + strlen(name) + 1);
if
(ti == NULL
)
return -
1;
ti->ti_ino = s.st_ino;
- snprintf(ti->ti_name, sizeof(ti->ti_name), "%s",
- savename ? savename : realname);
+ snprintf(ti->ti_name, strlen(name) + 1, "%s", name);
libtar_hash_add
(td->td_h, ti
);
}
/* check if it's a symlink */
if
(TH_ISSYM
(t
))
{
- i = readlink(realname, path, sizeof(path));
+ if ((path = malloc(s.st_size + 1)) == NULL)
+ return -1;
+ i = readlink(realname, path, s.st_size);
if
(i == -
1)
+ {
+ free(path);
return -
1;
- if (i >= MAXPATHLEN)
- i = MAXPATHLEN - 1;
+ }
path
[i
] = '\
0';
#ifdef DEBUG
printf
(" tar_append_file
(): encoding symlink \"%s\" -> "
"\"%s\"...\n", realname, path
);
#endif
th_set_link
(t, path
);
+ free(path);
}
/* print file info */
--- a/lib/decode.c
+++ b/lib/decode.c
@@ -32,7 +32,8 @@ th_get_pathname(TAR *t)
/* allocate the th_pathname buffer if not already */
if
(t->th_pathname == NULL
)
{
- t->th_pathname = malloc(MAXPATHLEN * sizeof(char));
+ /* Allocate the maximum length of prefix + '/' + name + '\0' */
+ t->th_pathname = malloc(155 + 1 + 100 + 1);
if
(t->th_pathname == NULL
)
/* out of memory */
return NULL;
@@ -40,11 +41,11 @@ th_get_pathname(TAR *t)
if
(t->th_buf.prefix
[0] == '\
0'
)
{
- snprintf(t->th_pathname, MAXPATHLEN, "%.100s", t->th_buf.name);
+ sprintf(t->th_pathname, "%.100s", t->th_buf.name);
}
else
{
- snprintf(t->th_pathname, MAXPATHLEN, "%.155s/%.100s",
+ sprintf(t->th_pathname, "%.155s/%.100s",
t->th_buf.prefix, t->th_buf.name
);
}
--- a/lib/util.c
+++ b/lib/util.c
@@ -15,6 +15,7 @@
#include <stdio.h>
#include <sys/param.h>
#include <errno.h>
+#include <stdlib.h>
#ifdef STDC_HEADERS
# include <string.h>
@@ -25,13 +26,15 @@
int
path_hashfunc
(char *key, int numbuckets
)
{
- char buf[MAXPATHLEN];
+ char *buf;
char *p;
+ int i;
- strcpy(buf, key);
+ buf = strdup(key);
p = basename
(buf
);
-
- return (((unsigned int)p[0]) % numbuckets);
+ i = ((unsigned int)p[0]) % numbuckets;
+ free(buf);
+ return (i);
}
@@ -77,15 +80,26 @@ ino_hash(ino_t *inode)
int
mkdirhier
(char *path
)
{
- char src[MAXPATHLEN], dst[MAXPATHLEN] = "";
- char *dirp, *nextp = src;
- int retval = 1;
+ char *src, *dst = NULL;
+ char *dirp, *nextp = NULL;
+ int retval = 1, len;
+
+ len = strlen(path);
+ if ((src = strdup(path)) == NULL)
+ {
+ errno = ENOMEM;
+ return -1;
+ }
+ nextp = src;
- if (strlcpy(src, path, sizeof(src)) > sizeof(src))
+ /* Make room for // with absolute paths */
+ if ((dst = malloc(len + 2)) == NULL)
{
- errno = ENAMETOOLONG;
+ free(src);
+ errno = ENOMEM;
return -
1;
}
+ dst[0] = '\0';
if
(path
[0] == '/'
)
strcpy
(dst, "/"
);
@@ -102,12 +116,18 @@ mkdirhier(char *path)
if
(mkdir
(dst, 0777
) == -
1)
{
if
(errno != EEXIST
)
+ {
+ free(src);
+ free(dst);
return -
1;
+ }
}
else
retval =
0;
}
+ free(src);
+ free(dst);
return retval;
}
--- a/lib/wrapper.c
+++ b/lib/wrapper.c
@@ -16,6 +16,7 @@
#include <sys/param.h>
#include <dirent.h>
#include <errno.h>
+#include <stdlib.h>
#ifdef STDC_HEADERS
# include <string.h>
@@ -26,8 +27,8 @@ int
tar_extract_glob
(TAR *t, char *globname, char *prefix
)
{
char *filename;
- char buf[MAXPATHLEN];
- int i;
+ char *buf = NULL;
+ int i, len;
while
((i = th_read
(t
)) ==
0)
{
@@ -41,11 +42,25 @@ tar_extract_glob(TAR *t, char *globname,
if
(t->options & TAR_VERBOSE
)
th_print_long_ls
(t
);
if
(prefix != NULL
)
- snprintf(buf, sizeof(buf), "%s/%s", prefix, filename);
+ {
+ len = strlen(prefix) + 1 + strlen(filename);
+ if ((buf = malloc(len + 1)) == NULL)
+ return -1;
+ sprintf(buf, "%s/%s", prefix, filename);
+ }
else
- strlcpy(buf, filename, sizeof(buf));
+ {
+ len = strlen(filename);
+ if ((buf = malloc(len + 1)) == NULL)
+ return -1;
+ strcpy(buf, filename);
+ }
if
(tar_extract_file
(t, buf
) !=
0)
+ {
+ free(buf);
return -
1;
+ }
+ free(buf);
}
return
(i ==
1 ?
0 : -
1);
@@ -56,8 +71,9 @@ int
tar_extract_all
(TAR *t, char *prefix
)
{
char *filename;
- char buf[MAXPATHLEN];
- int i;
+ char *buf = NULL;
+ size_t bufsize = 0;
+ int i, len;
#ifdef DEBUG
printf
("==> tar_extract_all
(TAR *t, \"%s\"
)\n",
@@ -73,15 +89,29 @@ tar_extract_all(TAR *t, char *prefix)
if
(t->options & TAR_VERBOSE
)
th_print_long_ls
(t
);
if
(prefix != NULL
)
- snprintf(buf, sizeof(buf), "%s/%s", prefix, filename);
+ {
+ len = strlen(prefix) + 1 + strlen(filename);
+ if ((buf = malloc(len + 1)) == NULL)
+ return -1;
+ sprintf(buf, "%s/%s", prefix, filename);
+ }
else
- strlcpy(buf, filename, sizeof(buf));
+ {
+ len = strlen(filename);
+ if ((buf = malloc(len + 1)) == NULL)
+ return -1;
+ strcpy(buf, filename);
+ }
#ifdef DEBUG
printf
(" tar_extract_all
(): calling tar_extract_file
(t, "
"\"%s\"
)\n", buf
);
#endif
if
(tar_extract_file
(t, buf
) !=
0)
+ {
+ free(buf);
return -
1;
+ }
+ free(buf);
}
return
(i ==
1 ?
0 : -
1);
@@ -91,11 +121,14 @@ tar_extract_all(TAR *t, char *prefix)
int
tar_append_tree
(TAR *t, char *realdir, char *savedir
)
{
- char realpath[MAXPATHLEN];
- char savepath[MAXPATHLEN];
+ char *realpath = NULL;
+ size_t realpathsize = 0;
+ char *savepath = NULL;
+ size_t savepathsize = 0;
struct dirent *dent;
DIR *dp;
struct stat s;
+ int len;
#ifdef DEBUG
printf
("==> tar_append_tree
(0x%lx, \"%s\", \"%s\"
)\n",
@@ -122,11 +155,21 @@ tar_append_tree(TAR *t, char *realdir, c
strcmp
(dent->d_name, ".."
) ==
0)
continue;
- snprintf(realpath, MAXPATHLEN, "%s/%s", realdir,
+ len = strlen(realdir) + 1 + strlen(dent->d_name);
+ if ((realpath = malloc(len + 1)) == NULL)
+ return -1;
+ snprintf(realpath, len + 1, "%s/%s", realdir,
dent->d_name
);
if
(savedir
)
- snprintf(savepath, MAXPATHLEN, "%s/%s", savedir,
+ {
+ len = strlen(savedir) + 1 + strlen(dent->d_name);
+ if ((savepath = malloc(len + 1)) == NULL) {
+ free(realpath);
+ return -1;
+ }
+ snprintf(savepath, len + 1, "%s/%s", savedir,
dent->d_name
);
+ }
if
(lstat
(realpath, &s
) !=
0)
return -
1;
@@ -135,13 +178,23 @@ tar_append_tree(TAR *t, char *realdir, c
{
if
(tar_append_tree
(t, realpath,
(savedir ? savepath : NULL
)) !=
0)
+ {
+ free(realpath);
+ free(savepath);
return -
1;
+ }
continue;
}
if
(tar_append_file
(t, realpath,
(savedir ? savepath : NULL
)) !=
0)
+ {
+ free(realpath);
+ free(savepath);
return -
1;
+ }
+ free(realpath);
+ free(savepath);
}
closedir
(dp
);
--- a/libtar/libtar.c
+++ b/libtar/libtar.c
@@ -111,8 +111,9 @@ create(char *tarfile, char *rootdir, lib
{
TAR *t;
char *pathname;
- char buf[MAXPATHLEN];
+ char *buf = NULL;
libtar_listptr_t lp;
+ int len;
if
(tar_open
(&t, tarfile,
#ifdef HAVE_LIBZ
@@ -133,17 +134,29 @@ create(char *tarfile, char *rootdir, lib
{
pathname =
(char *
)libtar_listptr_data
(&lp
);
if
(pathname
[0] != '/' && rootdir != NULL
)
- snprintf(buf, sizeof(buf), "%s/%s", rootdir, pathname);
+ {
+ len = strlen(rootdir) + 1 + strlen(pathname);
+ if ((buf = malloc(len + 1)) == NULL)
+ return -1;
+ snprintf(buf, len + 1, "%s/%s", rootdir, pathname);
+ }
else
- strlcpy(buf, pathname, sizeof(buf));
+ {
+ len = strlen(pathname);
+ if ((buf = malloc(len + 1)) == NULL)
+ return -1;
+ strlcpy(buf, pathname, len + 1);
+ }
if
(tar_append_tree
(t, buf, pathname
) !=
0)
{
fprintf
(stderr,
"tar_append_tree
(\"%s\", \"%s\"
): %s\n", buf,
pathname, strerror
(errno
));
tar_close
(t
);
+ free(buf);
return -
1;
}
+ free(buf);
}
if
(tar_append_eof
(t
) !=
0)