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| author | Brooks Moses <bmoses@google.com> | 2013-12-11 16:58:12 -0800 |
|---|---|---|
| committer | Brooks Moses <bmoses@google.com> | 2013-12-18 10:52:37 -0800 |
| commit | b9ab448f980e296eac21ac65f53783967cc6037b (patch) | |
| tree | 7e145e47823b6f960a5b4e47559122b265567d12 /misc/sys | |
| parent | f889953b44da50bf8a7824c97d09dbe03fd11b83 (diff) | |
| download | glibc-b9ab448f980e296eac21ac65f53783967cc6037b.zip glibc-b9ab448f980e296eac21ac65f53783967cc6037b.tar.gz glibc-b9ab448f980e296eac21ac65f53783967cc6037b.tar.bz2 | |
Add error reporting (via errno) to getauxval().
[BZ 15846] As discussed in the recent thread on my $EXEC_ORIGIN patch
and in BZ 15846, getauxval() presently has no unambiguous way of
reporting an error condition. It currently returns zero on error, but
this may also be a valid result for some auxv entries. As there is no
clear invalid result for all current and future auxv entries, this patch
sets errno (following a suggestion in the BZ entry).
This version of the patch also adds documentation and tests for the
value-not-found conditions in getauxval().
Diffstat (limited to 'misc/sys')
| -rw-r--r-- | misc/sys/auxv.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/misc/sys/auxv.h b/misc/sys/auxv.h index a69250b..7aec3a0 100644 --- a/misc/sys/auxv.h +++ b/misc/sys/auxv.h @@ -27,9 +27,9 @@ __BEGIN_DECLS /* Return the value associated with an Elf*_auxv_t type from the auxv list passed to the program on startup. If TYPE was not present in the auxv - list, returns zero. */ + list, returns zero and sets errno to ENOENT. */ extern unsigned long int getauxval (unsigned long int __type) - __THROW __attribute_const__; + __THROW; __END_DECLS |