LDP
/
man-pages
mirror of https://github.com/mkerrisk/man-pages
0
1
Fork 0
Code Releases Activity

seccomp.2: in EXAMPLE, clearly note that x32 syscalls are >= X32_SYSCALL_BIT 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2018-03-05 10:17:43 +01:00
parent 050f349421
commit a3dcaaa2ba
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
man2/seccomp.2
View File

@ -983,7 +983,9 @@ install_filter(int syscall_nr, int t_arch, int f_errno)
{
unsigned int upper_nr_limit = 0xffffffff;
/* Assume that AUDIT_ARCH_X86_64 means the normal x86-64 ABI */
/* Assume that AUDIT_ARCH_X86_64 means the normal x86-64 ABI
(in the x32 ABI, all system calls have bit 30 set in the
'nr' field, meaning the numbers are >= X32_SYSCALL_BIT) */
if (t_arch == AUDIT_ARCH_X86_64)
upper_nr_limit = X32_SYSCALL_BIT - 1;