mirror/nasm
2
0
Fork 0
mirror of https://github.com/netwide-assembler/nasm.git synced 2025-01-30 16:41:05 +08:00
Code Issues Packages Projects Releases Wiki Activity

realpath: if we can't get the full path, return the known portion

Browse Source 
Right now, we don't check the return value from nasm_realpath();
furthermore doing so and failing is probably not the ideal behavior.

If we can't get the full canonical path, then punt and just return
nasm_strdup() of the known path name; better than nothing.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
H. Peter Anvin 2016-02-18 01:53:47 -08:00
parent 11b8817e8a
commit 9e122a6603
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
realpath.c
View File

@ -57,7 +57,8 @@
*/
char *nasm_realpath(const char *rel_path)
{
return canonicalize_file_name(rel_path);
char *rp = canonicalize_file_name(rel_path);
return rp ? rp : nasm_strdup(rel_path);
}
#elif defined(HAVE_REALPATH)
@ -69,16 +70,14 @@ char *nasm_realpath(const char *rel_path)
char *nasm_realpath(const char *rel_path)
{
char *buf;
char *rp;
buf = realpath(rel_path, NULL);
if (buf)
return buf;
rp = realpath(rel_path, NULL);
/* Not all implemetations of realpath() support a NULL second argument */
if (errno == EINVAL) {
int path_max = -1;
char *buf;
if (!rp && errno == EINVAL) {
long path_max = -1;
char *rp;
#if defined(HAVE_PATHCONF) && defined(_PC_PATH_MAX)
path_max = pathconf(rel_path, _PC_PATH_MAX); /* POSIX */
@ -94,20 +93,20 @@ char *nasm_realpath(const char *rel_path)
#endif
}
buf = nasm_malloc(path_max);
rp = nasm_malloc(path_max);
if (!realpath(rel_path, buf)) {
nasm_free(buf);
buf = NULL;
if (!realpath(rel_path, rp)) {
nasm_free(rp);
rp = NULL;
} else {
/* On some systems, pathconf() can return a very large value */
buf[path_max - 1] = '\0'; /* Just in case overrun is possible */
buf = nasm_realloc(buf, strlen(buf) + 1);
rp[path_max - 1] = '\0'; /* Just in case overrun is possible */
rp = nasm_realloc(rp, strlen(rp) + 1);
}
}
return buf;
return rp ? rp : nasm_strdup(rel_path);
}
#elif defined(HAVE__FULLPATH)
@ -118,7 +117,8 @@ char *nasm_realpath(const char *rel_path)
char *nasm_realpath(const char *rel_path)
{
return _fullpath(NULL, rel_path, 0);
char *rp = _fullpath(NULL, rel_path, 0);
return rp ? rp : nasm_strdup(rel_path);
}
#else