diff options
Diffstat (limited to 'libc/sysdeps/linux')
| -rw-r--r-- | libc/sysdeps/linux/common/ftruncate64.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/libc/sysdeps/linux/common/ftruncate64.c b/libc/sysdeps/linux/common/ftruncate64.c index 76b0c0636..61ca9339e 100644 --- a/libc/sysdeps/linux/common/ftruncate64.c +++ b/libc/sysdeps/linux/common/ftruncate64.c @@ -19,6 +19,8 @@ #include <stdint.h> #include <sys/syscall.h> +#if defined __UCLIBC_HAS_LFS__ + #if defined __NR_ftruncate64 #if __WORDSIZE == 64 || (defined(__powerpc__) && defined (__UCLIBC_HAS_LFS__)) @@ -28,15 +30,12 @@ _syscall2(int, ftruncate64, int, fd, __off64_t, length); #elif __WORDSIZE == 32 -#if defined __UCLIBC_HAS_LFS__ - #ifndef INLINE_SYSCALL #define INLINE_SYSCALL(name, nr, args...) __syscall_ftruncate64 (args) #define __NR___syscall_ftruncate64 __NR_ftruncate64 static inline _syscall3(int, __syscall_ftruncate64, int, fd, int, high_length, int, low_length); #endif - /* The exported ftruncate64 function. */ int ftruncate64 (int fd, __off64_t length) { @@ -44,11 +43,26 @@ int ftruncate64 (int fd, __off64_t length) uint32_t high = length >> 32; return INLINE_SYSCALL(ftruncate64, 3, fd, __LONG_LONG_PAIR (high, low)); } -#endif /* __UCLIBC_HAS_LFS__ */ #else /* __WORDSIZE */ #error Your machine is not 64 bit or 32 bit, I am dazed and confused. #endif /* __WORDSIZE */ -#endif +#else /* __NR_ftruncate64 */ + +int ftruncate64 (int fd, __off64_t length) +{ + __off_t x = (__off_t) length; + + if (x == length) { + return ftruncate(fd, x); + } + + __set_errno((x < 0) ? EINVAL : EFBIG); + return -1; +} + +#endif /* __NR_ftruncate64 */ + +#endif /* __UCLIBC_HAS_LFS__ */ |