lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-07-28 00:21:52 +03:00
Code Activity

Linux: Clean up preadv2, pwritev2 system call names

Browse Source 
With the built-in tables __NR_preadv2 and __NR_pwritev2 are always
defined.

The kernel has never defined __NR_preadv64v2 and __NR_pwritev64v2
and is unlikely to do so, given that the preadv2 and pwritev2 system
calls themselves are 64-bit.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
This commit is contained in:
Florian Weimer
2020-03-03 12:18:22 +01:00
parent 11ae9a185b
commit b5350b487c
4 changed files with 7 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
sysdeps/unix/sysv/linux/preadv2.c
View File

@ -21,20 +21,15 @@
#ifndef __OFF_T_MATCHES_OFF64_T
# if !defined (__NR_preadv2) && defined (__NR_pread64v2)
# define __NR_preadv2 __NR_pread64v2
# endif
ssize_t
preadv2 (int fd, const struct iovec *vector, int count, off_t offset,
int flags)
{
# ifdef __NR_preadv2
ssize_t result = SYSCALL_CANCEL (preadv2, fd, vector, count,
LO_HI_LONG (offset), flags);
if (result >= 0 || errno != ENOSYS)
return result;
# endif
/* Trying to emulate the preadv2 syscall flags is troublesome:
* We can not temporary change the file state of the O_DSYNC and O_SYNC