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| author | Daniel Micay <danielmicay@gmail.com> | 2015-04-18 13:04:19 -0400 |
|---|---|---|
| committer | Daniel Micay <danielmicay@gmail.com> | 2015-04-20 17:31:24 -0400 |
| commit | 3244d9f07fda946d62afdfa61ed5a876d380d0ff (patch) | |
| tree | c7f124de4880d6a79e89373b2ee97fa190a71e10 /libc | |
| parent | af7538b49625f1c1c82e984610f26729a18d56bf (diff) | |
| download | bionic-3244d9f07fda946d62afdfa61ed5a876d380d0ff.zip bionic-3244d9f07fda946d62afdfa61ed5a876d380d0ff.tar.gz bionic-3244d9f07fda946d62afdfa61ed5a876d380d0ff.tar.bz2 | |
add a fortified implementation of realpath
Change-Id: Icc59eacd1684f7cddd83d7a2b57dad0c7ada5eb7
Diffstat (limited to 'libc')
| -rw-r--r-- | libc/include/stdlib.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h index 84bf56d..efca577 100644 --- a/libc/include/stdlib.h +++ b/libc/include/stdlib.h @@ -176,6 +176,27 @@ extern size_t __ctype_get_mb_cur_max(void); #include <android/legacy_stdlib_inlines.h> #endif +#if defined(__BIONIC_FORTIFY) + +extern char* __realpath_real(const char*, char*) __RENAME(realpath); +__errordecl(__realpath_size_error, "realpath output parameter must be NULL or a >= PATH_MAX bytes buffer"); + +#if !defined(__clang__) +__BIONIC_FORTIFY_INLINE +char* realpath(const char* path, char* resolved) { + size_t bos = __bos(resolved); + + /* PATH_MAX is unavailable without polluting the namespace, but it's always 4096 on Linux */ + if (bos != __BIONIC_FORTIFY_UNKNOWN_SIZE && bos < 4096) { + __realpath_size_error(); + } + + return __realpath_real(path, resolved); +} +#endif + +#endif /* defined(__BIONIC_FORTIFY) */ + __END_DECLS #endif /* _STDLIB_H */ |