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authorMike Gilbert <floppym@gentoo.org>2015-09-14 18:55:09 -0400
committerMike Gilbert <floppym@gentoo.org>2015-09-23 14:41:28 -0400
commit75b554579b4e962e2c02053129a37611a2dc9133 (patch)
treeb29afa377afccee17f9df15cdb75f1bb3856c1e3
parentd80157747393a545b33f462e511a1629844d4d61 (diff)
Add fallback for kcmp() in case __NR_kcmp is undefined
IA64 is missing this syscall as of linux-4.2. This works around it until the necessary kernel patch gets merged.
-rw-r--r--src/basic/missing.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/basic/missing.h b/src/basic/missing.h
index dc1f244d4c..371ef8a862 100644
--- a/src/basic/missing.h
+++ b/src/basic/missing.h
@@ -1028,7 +1028,12 @@ static inline int renameat2(int oldfd, const char *oldname, int newfd, const cha
#if !HAVE_DECL_KCMP
static inline int kcmp(pid_t pid1, pid_t pid2, int type, unsigned long idx1, unsigned long idx2) {
+#if defined(__NR_kcmp)
return syscall(__NR_kcmp, pid1, pid2, type, idx1, idx2);
+#else
+ errno = ENOSYS;
+ return -1;
+#endif
}
#endif