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authorRich Felker <dalias@aerifal.cx>2012-06-20 22:16:47 -0400
committerRich Felker <dalias@aerifal.cx>2012-06-20 22:16:47 -0400
commit4e8b0938d90793d6e1e200d6b25e6581b72bd4d0 (patch)
treecb0255413023716592eebc9f7978d7c1a1b00179 /arch
parente5fb6820a42a1f675ba09c15273953e1ace65777 (diff)
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proper error handling for fcntl F_GETOWN on modern kernels
on old kernels, there's no way to detect errors; we must assume
negative syscall return values are pgrp ids. but if the F_GETOWN_EX
fcntl works, we can get a reliable answer.
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/bits/fcntl.h3
-rw-r--r--arch/i386/bits/fcntl.h3
-rw-r--r--arch/x86_64/bits/fcntl.h3
3 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/bits/fcntl.h b/arch/arm/bits/fcntl.h
index fc65ebcc..9595f9ca 100644
--- a/arch/arm/bits/fcntl.h
+++ b/arch/arm/bits/fcntl.h
@@ -31,3 +31,6 @@
 #define F_GETLK 12
 #define F_SETLK 13
 #define F_SETLKW 14
+
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
diff --git a/arch/i386/bits/fcntl.h b/arch/i386/bits/fcntl.h
index 7f09b95c..69f3a8f5 100644
--- a/arch/i386/bits/fcntl.h
+++ b/arch/i386/bits/fcntl.h
@@ -31,3 +31,6 @@
 #define F_GETLK 12
 #define F_SETLK 13
 #define F_SETLKW 14
+
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16
diff --git a/arch/x86_64/bits/fcntl.h b/arch/x86_64/bits/fcntl.h
index 7b300210..9e07229e 100644
--- a/arch/x86_64/bits/fcntl.h
+++ b/arch/x86_64/bits/fcntl.h
@@ -31,3 +31,6 @@
 #define F_GETLK 5
 #define F_SETLK 6
 #define F_SETLKW 7
+
+#define F_SETOWN_EX 15
+#define F_GETOWN_EX 16