https://bugs.kde.org/show_bug.cgi?id=451878
Bug ID: 451878
Summary: Add support for new syscall memfd_secret
Product: valgrind
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: jsew...@acm.org
Reporter: di.che...@outlook.com
Target Milestone: ---
memfd_secret introduced in kernel 5.14.
According to https://lwn.net/Articles/865256/,
"memfd_secret() was disabled by default and a command-line option
(secretmem_enable=) was added to enable it at boot time."
$ cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos1)/vmlinuz-5.15.0-0.rc4.33.fc36.x86_64
root=UUID=6fd107e8-438a-48a2-915e-651e43fb438e ro rootflags=subvol=root rhgb
quiet secretmem.enable=y
$ cat memfd_secret.c
#define _GNU_SOURCE
#include <unistd.h>
#include <sys/syscall.h>
#include <fcntl.h>
#include <err.h>
#include <stdio.h>
#include <errno.h>
int main(void){
printf("memfd_secret demo prog\n");
int fd;
fd = syscall(SYS_memfd_secret, O_CLOEXEC);
printf("fd = %d\n", fd);
printf("errno = %d\n", errno);
return 0;
}
$ gcc -o test memfd_secret.c
$ ./test
memfd_secret demo prog
fd = 3
errno = 0
--
You are receiving this mail because:
You are watching all bug changes.
