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path: root/libc/sysdeps/linux/common/truncate64.c
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Diffstat (limited to 'libc/sysdeps/linux/common/truncate64.c')
-rw-r--r--libc/sysdeps/linux/common/truncate64.c43
1 files changed, 36 insertions, 7 deletions
diff --git a/libc/sysdeps/linux/common/truncate64.c b/libc/sysdeps/linux/common/truncate64.c
index ba6d95d1d..cf74812d6 100644
--- a/libc/sysdeps/linux/common/truncate64.c
+++ b/libc/sysdeps/linux/common/truncate64.c
@@ -17,23 +17,30 @@
#include <errno.h>
#include <endian.h>
#include <stdint.h>
+#include <sys/types.h>
#include <sys/syscall.h>
+#if defined __UCLIBC_HAS_LFS__
+
#if defined __NR_truncate64
-#if __WORDSIZE == 64 || (defined(__powerpc__) && defined (__UCLIBC_HAS_LFS__))
+#if __WORDSIZE == 64
/* For a 64 bit machine, life is simple... */
_syscall2(int, truncate64, const char *, path, __off64_t, length);
#elif __WORDSIZE == 32
-#if defined __UCLIBC_HAS_LFS__
-
#ifndef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...) __syscall_truncate64 (args)
#define __NR___syscall_truncate64 __NR_truncate64
-static inline _syscall3(int, __syscall_truncate64, const char *, path, int, high_length, int, low_length);
+#if defined(__powerpc__) || defined(__mips__)
+static inline _syscall4(int, __syscall_truncate64, const char *, path,
+ uint32_t, pad, unsigned long, high_length, unsigned long, low_length);
+#else
+static inline _syscall3(int, __syscall_truncate64, const char *, path,
+ unsigned long, high_length, unsigned long, low_length);
+#endif
#endif
@@ -42,13 +49,35 @@ int truncate64 (const char * path, __off64_t length)
{
uint32_t low = length & 0xffffffff;
uint32_t high = length >> 32;
- return INLINE_SYSCALL(truncate64, 3, path, __LONG_LONG_PAIR (high, low));
+#if defined(__powerpc__) || defined(__mips__)
+ return INLINE_SYSCALL(truncate64, 4, path, 0,
+ __LONG_LONG_PAIR (high, low));
+#else
+ return INLINE_SYSCALL(truncate64, 3, path,
+ __LONG_LONG_PAIR (high, low));
+#endif
}
-#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_truncate64 */
+
+int truncate64 (const char * path, __off64_t length)
+{
+ __off_t x = (__off_t) length;
+
+ if (x == length) {
+ return truncate(path, x);
+ }
+
+ __set_errno((x < 0) ? EINVAL : EFBIG);
+
+ return -1;
+}
+
+#endif /* __NR_truncate64 */
+
+#endif /* __UCLIBC_HAS_LFS__ */