mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-29 14:01:20 +00:00
78ed8bdf4f
Linux 5.17 added support to naming anonymous virtual memory areas
through the prctl syscall. The __set_vma_name is a wrapper to avoid
optimizing the prctl call if the kernel does not support it.
If the kernel does not support PR_SET_VMA_ANON_NAME, prctl returns
EINVAL. And it also returns the same error for an invalid argument.
Since it is an internal-only API, it assumes well-formatted input:
aligned START, with (START, START+LEN) being a valid memory range,
and NAME with a limit of 80 characters without an invalid one
("\\`$[]").
Reviewed-by: DJ Delorie <dj@redhat.com>
16 lines
277 B
C
16 lines
277 B
C
#ifndef _SYS_PRCTL_H
|
|
#include_next <sys/prctl.h>
|
|
|
|
# ifndef _ISOMAC
|
|
|
|
# ifndef PR_SET_VMA
|
|
# define PR_SET_VMA 0x53564d41
|
|
# define PR_SET_VMA_ANON_NAME 0
|
|
# endif
|
|
|
|
extern int __prctl (int __option, ...);
|
|
libc_hidden_proto (__prctl)
|
|
|
|
# endif /* !_ISOMAC */
|
|
#endif
|