diff options
Diffstat (limited to 'libc/sysdeps/linux/common/posix_fadvise64.c')
| -rw-r--r-- | libc/sysdeps/linux/common/posix_fadvise64.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/libc/sysdeps/linux/common/posix_fadvise64.c b/libc/sysdeps/linux/common/posix_fadvise64.c index 5d8ed65b6..03e25ed93 100644 --- a/libc/sysdeps/linux/common/posix_fadvise64.c +++ b/libc/sysdeps/linux/common/posix_fadvise64.c @@ -40,14 +40,35 @@ int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice) return INTERNAL_SYSCALL_ERRNO (ret, err); } #else -_syscall4(int, posix_fadvise64, int, fd, __off64_t, offset, +static __inline__ int syscall_posix_fadvise(int fd, off_t offset1, off_t offset2, off_t len, int advice); +#define __NR_syscall_posix_fadvise64 __NR_posix_fadvise64 +_syscall4(int, syscall_posix_fadvise64, int, fd, __off64_t, offset, __off64_t, len, int, advice); +int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice) +{ + int ret = syscall_posix_fadvise64(fd, offset, len, advice); + if (ret == -1) + return errno; + return ret; +} #endif /* 32 bit implementation is kind of a pita */ #elif __WORDSIZE == 32 -#ifdef _syscall6 /* workaround until everyone has _syscall6() */ +#ifdef INTERNAL_SYSCALL +int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice) +{ + INTERNAL_SYSCALL_DECL (err); + int ret = INTERNAL_SYSCALL (fadvise64_64, err, 6, fd, + __LONG_LONG_PAIR(offset >> 32, offset & 0xffffffff), + __LONG_LONG_PAIR(len >> 32, len & 0xffffffff), + advice); + if (!INTERNAL_SYSCALL_ERROR_P (ret, err)) + return 0; + return INTERNAL_SYSCALL_ERRNO (ret, err); +} +#elif defined _syscall6 /* workaround until everyone has _syscall6() */ #define __NR___syscall_fadvise64_64 __NR_fadvise64_64 static __inline__ _syscall6(int, __syscall_fadvise64_64, int, fd, unsigned long, high_offset, unsigned long, low_offset, @@ -55,14 +76,17 @@ static __inline__ _syscall6(int, __syscall_fadvise64_64, int, fd, int, advice); int posix_fadvise64(int fd, __off64_t offset, __off64_t len, int advice) { - return (__syscall_fadvise64_64(fd, + int ret = __syscall_fadvise64_64(fd, __LONG_LONG_PAIR(offset >> 32, offset & 0xffffffff), __LONG_LONG_PAIR(len >> 32, len & 0xffffffff), - advice)); + advice); + if (ret == -1) + return errno; + return ret; } #else -#warning _syscall6 has not been defined for your machine :( -#endif /* _syscall6 */ +#warning neither INTERNAL_SYSCALL nor _syscall6 has been defined for your machine :( +#endif /* INTERNAL_SYSCALL */ #else #error your machine is neither 32 bit or 64 bit ... it must be magical |