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Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/pread_write.c15
1 files changed, 9 insertions, 6 deletions
diff --git a/libc/sysdeps/linux/common/pread_write.c b/libc/sysdeps/linux/common/pread_write.c
index 7955916fe..bf04be41f 100644
--- a/libc/sysdeps/linux/common/pread_write.c
+++ b/libc/sysdeps/linux/common/pread_write.c
@@ -38,6 +38,7 @@
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
+#include <stdint.h>
#ifdef __NR_pread
@@ -47,15 +48,16 @@ static inline _syscall5(ssize_t, __syscall_pread, int, fd, void *, buf,
ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
{
- return(__syscall_pread(fd,buf,count,__LONG_LONG_PAIR((off_t)0,offset)));
+ return(__syscall_pread(fd,buf,count,__LONG_LONG_PAIR (offset >> 31, offset)));
}
weak_alias (__libc_pread, pread)
#if defined __UCLIBC_HAS_LFS__
ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
{
- return(__syscall_pread(fd, buf, count,
- __LONG_LONG_PAIR((off_t)(offset>>32),(off_t)(offset&0xffffffff))));
+ uint32_t low = offset & 0xffffffff;
+ uint32_t high = offset >> 32;
+ return(__syscall_pread(fd, buf, count, __LONG_LONG_PAIR (high, low)));
}
weak_alias (__libc_pread64, pread64)
#endif /* __UCLIBC_HAS_LFS__ */
@@ -71,15 +73,16 @@ static inline _syscall5(ssize_t, __syscall_pwrite, int, fd, const void *, buf,
ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
{
- return(__syscall_pwrite(fd,buf,count,__LONG_LONG_PAIR((off_t)0,offset)));
+ return(__syscall_pwrite(fd,buf,count,__LONG_LONG_PAIR (offset >> 31, offset)));
}
weak_alias (__libc_pwrite, pwrite)
#if defined __UCLIBC_HAS_LFS__
ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
{
- return(__syscall_pwrite(fd, buf, count,
- __LONG_LONG_PAIR((off_t)(offset>>32),(off_t)(offset&0xffffffff))));
+ uint32_t low = offset & 0xffffffff;
+ uint32_t high = offset >> 32;
+ return(__syscall_pwrite(fd, buf, count, __LONG_LONG_PAIR (high, low)));
}
weak_alias (__libc_pwrite64, pwrite64)
#endif /* __UCLIBC_HAS_LFS__ */