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Thomas Gleixner c08b8a4910 [PATCH] sys_alarm() unsigned signed conversion fixup ... alarm() calls the kernel with an unsigend int timeout in seconds. The value is stored in the tv_sec field of a struct timeval to setup the itimer. The tv_sec field of struct timeval is of type long, which causes the tv_sec value to be negative on 32 bit machines if seconds > INT_MAX. Before the hrtimer merge (pre 2.6.16) such a negative value was converted to the maximum jiffies timeout by the timeval_to_jiffies conversion. It's not clear whether this was intended or just happened to be done by the timeval_to_jiffies code. hrtimers expect a timeval in canonical form and treat a negative timeout as already expired. This breaks the legitimate usage of alarm() with a timeout value > INT_MAX seconds. For 32 bit machines it is therefor necessary to limit the internal seconds value to avoid API breakage. Instead of doing this in all implementations of sys_alarm the duplicated sys_alarm code is moved into a common function in itimer.c Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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configs	…
dig	…
hp	[PATCH] kill _INLINE_	19 years ago
ia32	[PATCH] sys_alarm() unsigned signed conversion fixup	19 years ago
kernel	[PATCH] kill include/linux/platform.h, default_idle() cleanup	19 years ago
lib	…
mm	…
oprofile	…
pci	…
scripts	…
sn	[PATCH] s/;;/;/g	19 years ago
Kconfig	…
Kconfig.debug	…
Makefile	…
defconfig	…
install.sh	…
module.lds	…