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Remove __ASSUME_PROC_PID_TASK_COMM.

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This patch removes the __ASSUME_PROC_PID_TASK_COMM macro, and
associated conditional code (in a testcase), now that 3.2 is the
global minimum Linux kernel version supported.

Tested for x86_64.

	* sysdeps/unix/sysv/linux/kernel-features.h
	(__ASSUME_PROC_PID_TASK_COMM): Remove macro.
	* sysdeps/unix/sysv/linux/tst-setgetname.c: Do not include
	<kernel-features.h>.
	(do_test) [!__ASSUME_PROC_PID_TASK_COMM]: Remove conditional code.
This commit is contained in:
Joseph Myers 2017-05-08 16:44:54 +00:00
parent 1278ed2c64
commit 1721145f03
3 changed files with 6 additions and 19 deletions
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6
ChangeLog
View file

@ -1,5 +1,11 @@
2017-05-08 Joseph Myers <joseph@codesourcery.com> 2017-05-08 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/kernel-features.h
(__ASSUME_PROC_PID_TASK_COMM): Remove macro.
* sysdeps/unix/sysv/linux/tst-setgetname.c: Do not include
<kernel-features.h>.
(do_test) [!__ASSUME_PROC_PID_TASK_COMM]: Remove conditional code.
* sysdeps/unix/sysv/linux/x86_64/kernel-features.h * sysdeps/unix/sysv/linux/x86_64/kernel-features.h
(__ASSUME_GETCPU_SYSCALL): Remove macro. (__ASSUME_GETCPU_SYSCALL): Remove macro.

6
sysdeps/unix/sysv/linux/kernel-features.h
View file

@ -98,12 +98,6 @@
# define __ASSUME_RECVMMSG 1 # define __ASSUME_RECVMMSG 1
#endif #endif
/* Support for /proc/self/task/$tid/comm and /proc/$pid/task/$tid/comm was
added in 2.6.33. */
#if __LINUX_KERNEL_VERSION >= 0x020621
# define __ASSUME_PROC_PID_TASK_COMM 1
#endif
/* statfs fills in f_flags since 2.6.36. */ /* statfs fills in f_flags since 2.6.36. */
#if __LINUX_KERNEL_VERSION >= 0x020624 #if __LINUX_KERNEL_VERSION >= 0x020624
# define __ASSUME_STATFS_F_FLAGS 1 # define __ASSUME_STATFS_F_FLAGS 1

13
sysdeps/unix/sysv/linux/tst-setgetname.c
View file

@ -23,7 +23,6 @@
#include <unistd.h> #include <unistd.h>
#include <fcntl.h> #include <fcntl.h>
#include <errno.h> #include <errno.h>
#include <kernel-features.h>
/* New name of process. */ /* New name of process. */
#define NEW_NAME "setname" #define NEW_NAME "setname"
@ -101,18 +100,6 @@ do_test (int argc, char **argv)
{ {
res = get_self_comm (gettid (), name_check, TASK_COMM_LEN); res = get_self_comm (gettid (), name_check, TASK_COMM_LEN);
#ifndef __ASSUME_PROC_PID_TASK_COMM
/* On this first test we look for ENOENT to be returned from
get_self_comm to indicate that the kernel is older than
2.6.33 and doesn't contain comm within the proc structure.
In that case we skip the entire test. */
if (res == ENOENT)
{
printf ("SKIP: The kernel does not have /proc/self/task/%%lu/comm.\n");
return 0;
}
#endif
if (res == 0) if (res == 0)
{ {
if (strncmp (name, name_check, strlen (BIG_NAME)) == 0) if (strncmp (name, name_check, strlen (BIG_NAME)) == 0)