Forgot to include the changes to the header file in the first patch.
(Oops. Without that, the compiler optimizes out the null test because
it has a crazy "this can never be null" optimization hint applied.)
No idea what the _THROW is for and whether or not I should have
removed that or left it? (It's mentioned in docs/defines.txt but
that's all, no explanation.)
I'm guessing _wur is warn unused return? That's not mentioned in
docs at all...
Rob
--
Add cheesy malloc() support to realpath(). Still limited to PATH_MAX, but eh.
diff -ur uClibc/libc/stdlib/realpath.c uClibc.new/libc/stdlib/realpath.c
--- uClibc/libc/stdlib/realpath.c 2008-06-04 09:02:56.000000000 -0500
+++ uClibc.new/libc/stdlib/realpath.c 2009-10-25 13:17:42.000000000 -0500
@@ -55,7 +55,7 @@
char *max_path;
char *new_path;
size_t path_len;
- int readlinks = 0;
+ int readlinks = 0, allocated = 0;
#ifdef S_IFLNK
int link_len;
#endif
@@ -68,6 +68,10 @@
__set_errno(ENOENT);
return NULL;
}
+ if (!got_path) {
+ got_path = alloca(PATH_MAX);
+ allocated ++;
+ }
/* Make a copy of the source path since we may need to modify it. */
path_len = strlen(path);
if (path_len >= PATH_MAX - 2) {
@@ -168,5 +172,6 @@
new_path--;
/* Make sure it's null terminated. */
*new_path = '\0';
+ if (allocated) got_path = strdup(got_path);
return got_path;
}
diff -ur uClibc/include/stdlib.h uClibc2/include/stdlib.h
--- uClibc/include/stdlib.h 2008-09-11 11:17:43.000000000 -0500
+++ uClibc2/include/stdlib.h 2009-10-26 03:43:36.000000000 -0500
@@ -637,7 +637,7 @@
name in RESOLVED. */
/* we choose to handle __resolved==NULL as crash :) */
extern char *realpath (__const char *__restrict __name,
- char *__restrict __resolved) __THROW __wur
__nonnull((2));
+ char *__restrict __resolved) __wur;
#endif
--
Latency is more important than throughput. It's that simple. - Linus Torvalds
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