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path: root/libc/sysdeps/linux/common/pread_write.c
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Diffstat (limited to 'libc/sysdeps/linux/common/pread_write.c')
-rw-r--r--libc/sysdeps/linux/common/pread_write.c112
1 files changed, 0 insertions, 112 deletions
diff --git a/libc/sysdeps/linux/common/pread_write.c b/libc/sysdeps/linux/common/pread_write.c
index 089ee934d..48fe7dd4b 100644
--- a/libc/sysdeps/linux/common/pread_write.c
+++ b/libc/sysdeps/linux/common/pread_write.c
@@ -83,115 +83,3 @@ ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
weak_alias(__libc_pwrite64,pwrite64)
# endif /* __UCLIBC_HAS_LFS__ */
#endif /* __NR_pwrite */
-
-#if ! defined __NR_pread || ! defined __NR_pwrite
-
-static ssize_t __fake_pread_write(int fd, void *buf,
- size_t count, off_t offset, int do_pwrite)
-{
- int save_errno;
- ssize_t result;
- off_t old_offset;
-
- /* Since we must not change the file pointer preserve the
- * value so that we can restore it later. */
- if ((old_offset=lseek(fd, 0, SEEK_CUR)) == (off_t) -1)
- return -1;
-
- /* Set to wanted position. */
- if (lseek(fd, offset, SEEK_SET) == (off_t) -1)
- return -1;
-
- if (do_pwrite == 1) {
- /* Write the data. */
- result = write(fd, buf, count);
- } else {
- /* Read the data. */
- result = read(fd, buf, count);
- }
-
- /* Now we have to restore the position. If this fails we
- * have to return this as an error. */
- save_errno = errno;
- if (lseek(fd, old_offset, SEEK_SET) == (off_t) -1)
- {
- if (result == -1)
- __set_errno(save_errno);
- return -1;
- }
- __set_errno(save_errno);
- return(result);
-}
-
-# ifdef __UCLIBC_HAS_LFS__
-
-static ssize_t __fake_pread_write64(int fd, void *buf,
- size_t count, off64_t offset, int do_pwrite)
-{
- int save_errno;
- ssize_t result;
- off64_t old_offset;
-
- /* Since we must not change the file pointer preserve the
- * value so that we can restore it later. */
- if ((old_offset=lseek64(fd, 0, SEEK_CUR)) == (off64_t) -1)
- return -1;
-
- /* Set to wanted position. */
- if (lseek64(fd, offset, SEEK_SET) == (off64_t) -1)
- return -1;
-
- if (do_pwrite == 1) {
- /* Write the data. */
- result = write(fd, buf, count);
- } else {
- /* Read the data. */
- result = read(fd, buf, count);
- }
-
- /* Now we have to restore the position. */
- save_errno = errno;
- if (lseek64(fd, old_offset, SEEK_SET) == (off64_t) -1) {
- if (result == -1)
- __set_errno (save_errno);
- return -1;
- }
- __set_errno (save_errno);
- return result;
-}
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! defined __NR_pread || ! defined __NR_pwrite */
-
-#ifndef __NR_pread
-ssize_t __libc_pread(int fd, void *buf, size_t count, off_t offset)
-{
- return __fake_pread_write(fd, buf, count, offset, 0);
-}
-weak_alias(__libc_pread,pread)
-
-# ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pread64(int fd, void *buf, size_t count, off64_t offset)
-{
- return __fake_pread_write64(fd, buf, count, offset, 0);
-}
-weak_alias(__libc_pread64,pread64)
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! __NR_pread */
-
-#ifndef __NR_pwrite
-ssize_t __libc_pwrite(int fd, const void *buf, size_t count, off_t offset)
-{
- /* we won't actually be modifying the buffer,
- *just cast it to get rid of warnings */
- return __fake_pread_write(fd, (void*)buf, count, offset, 1);
-}
-weak_alias(__libc_pwrite,pwrite)
-
-# ifdef __UCLIBC_HAS_LFS__
-ssize_t __libc_pwrite64(int fd, const void *buf, size_t count, off64_t offset)
-{
- return __fake_pread_write64(fd, (void*)buf, count, offset, 1);
-}
-weak_alias(__libc_pwrite64,pwrite64)
-# endif /* __UCLIBC_HAS_LFS__ */
-#endif /* ! __NR_pwrite */