/* symlink */
int
tar_extract_symlink(TAR *t, char *realname)
{
char *filename;
if (!TH_ISSYM(t))
{
errno = EINVAL;
return -1;
}
filename = (realname ? realname : th_get_pathname(t));
if (mkdirhier(dirname(filename)) == -1)
return -1;
if (unlink(filename) == -1 && errno != ENOENT)
return -1;
#ifdef DEBUG
printf(" ==> extracting: %s (symlink to %s)\n",
filename, th_get_linkname(t));
#endif
if (symlink(th_get_linkname(t), filename) == -1)
{
#ifdef DEBUG
perror("symlink()");
#endif
return -1;
}
return 0;
}
/* hardlink */
int
tar_extract_hardlink(TAR * t, char *realname, char *prefix)
{
char *filename;
char *linktgt = NULL;
char *lnp;
libtar_hashptr_t hp;
if (!TH_ISLNK(t))
{
errno = EINVAL;
return -1;
}
filename = (realname ? realname : th_get_pathname(t));
if (mkdirhier(dirname(filename)) == -1)
return -1;
libtar_hashptr_reset(&hp);
if (libtar_hash_getkey(t->h, &hp, th_get_linkname(t),
(libtar_matchfunc_t)libtar_str_match) != 0)
{
lnp = (char *)libtar_hashptr_data(&hp);
linktgt = &lnp[strlen(lnp) + 1];
}
else
linktgt = th_get_linkname(t);
char *newtgt = strdup(linktgt);
sprintf(linktgt, "%s/%s", prefix, newtgt);
#ifdef DEBUG
printf(" ==> extracting: %s (link to %s)\n", filename, linktgt);
#endif
if (link(linktgt, filename) == -1)
{
#ifdef DEBUG
perror("link()");
#endif
printf("Failed restore of hardlink '%s' but returning as if nothing bad happened anyway\n", filename);
return 0; // Used to be -1
}
return 0;
}
/* hardlink */
int
tar_extract_hardlink(TAR * t, char *realname)
{
char *filename;
char *linktgt = NULL;
char *lnp;
libtar_hashptr_t hp;
if (!TH_ISLNK(t))
{
errno = EINVAL;
return -1;
}
filename = (realname ? realname : th_get_pathname(t));
if (mkdirhier(dirname(filename)) == -1)
return -1;
libtar_hashptr_reset(&hp);
if (libtar_hash_getkey(t->h, &hp, th_get_linkname(t),
(libtar_matchfunc_t)libtar_str_match) != 0)
{
lnp = (char *)libtar_hashptr_data(&hp);
linktgt = &lnp[strlen(lnp) + 1];
}
else
linktgt = th_get_linkname(t);
#ifdef DEBUG
printf(" ==> extracting: %s (link to %s)\n", filename, linktgt);
#endif
if (link(linktgt, filename) == -1)
{
#ifdef DEBUG
perror("link()");
#endif
return -1;
}
return 0;
}