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missing: Fix broken syscall(__NR_fanotify_mark... on o32 mips.

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http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=%23618562
MIPS o32 ABI enforces that 64bit arguments should be 64bit-aligned, and
the third argument of syscall(__NR_fanotify_mark, ...) is 64bit and not
64bit-aligned on o32 mips platform, thus extra padding is inserted
before it. The syscall function doesn't know the prototype of
fanotify_mark, so the padding will be passed into kernel as valid
argument.
This commit is contained in:
cee1 2011-04-20 17:59:18 +08:00 committed by Lennart Poettering
parent 13f9123298
commit 373c23b27f
1 changed files with 11 additions and 0 deletions
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11
src/missing.h
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@ -125,7 +125,18 @@ static inline int fanotify_init(unsigned int flags, unsigned int event_f_flags)
static inline int fanotify_mark(int fanotify_fd, unsigned int flags, uint64_t mask,
int dfd, const char *pathname) {
#if defined _MIPS_SIM && _MIPS_SIM == _MIPS_SIM_ABI32
union {
uint64_t _64;
uint32_t _32[2];
} _mask;
_mask._64 = mask;
return syscall(__NR_fanotify_mark, fanotify_fd, flags,
_mask._32[0], _mask._32[1], dfd, pathname);
#else
return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
#endif
}
#ifndef BTRFS_IOCTL_MAGIC