From c0c7c103756fee25aadfd5c36f7b86e318f9abb4 Mon Sep 17 00:00:00 2001 From: Willy Tarreau Date: Thu, 21 Jan 2021 08:20:25 +0100 Subject: tools/nolibc: Make getpgrp() fall back to getpgid(0) The getpgrp() syscall is not implemented on arm64, so this commit instead uses getpgid(0) when getpgrp() is not available. This is a port of nolibc's upstream commit 2379f25073f9 to the Linux kernel. Fixes: 66b6f755ad45 ("rcutorture: Import a copy of nolibc") Tested-by: Valentin Schneider Tested-by: Mark Rutland [arm64] Signed-off-by: Willy Tarreau Signed-off-by: Paul E. McKenney --- tools/include/nolibc/nolibc.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h index 5fda4d844054..9209da89044a 100644 --- a/tools/include/nolibc/nolibc.h +++ b/tools/include/nolibc/nolibc.h @@ -1544,10 +1544,16 @@ int sys_getdents64(int fd, struct linux_dirent64 *dirp, int count) return my_syscall3(__NR_getdents64, fd, dirp, count); } +static __attribute__((unused)) +pid_t sys_getpgid(pid_t pid) +{ + return my_syscall1(__NR_getpgid, pid); +} + static __attribute__((unused)) pid_t sys_getpgrp(void) { - return my_syscall0(__NR_getpgrp); + return sys_getpgid(0); } static __attribute__((unused)) @@ -1950,6 +1956,18 @@ int getdents64(int fd, struct linux_dirent64 *dirp, int count) return ret; } +static __attribute__((unused)) +pid_t getpgid(pid_t pid) +{ + pid_t ret = sys_getpgid(pid); + + if (ret < 0) { + SET_ERRNO(-ret); + ret = -1; + } + return ret; +} + static __attribute__((unused)) pid_t getpgrp(void) { -- cgit v1.2.3