Commit 5b9fedb3 authored May 17, 2021 by Jan Kara

quota: Disable quotactl_path syscall

In commit fa8b9007 ("quota: wire up quotactl_path") we have wired up
new quotactl_path syscall. However some people in LWN discussion have
objected that the path based syscall is missing dirfd and flags argument
which is mostly standard for contemporary path based syscalls. Indeed
they have a point and after a discussion with Christian Brauner and
Sascha Hauer I've decided to disable the syscall for now and update its
API. Since there is no userspace currently using that syscall and it
hasn't been released in any major release, we should be fine.

CC: Christian Brauner <christian.brauner@ubuntu.com>
CC: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/lkml/20210512153621.n5u43jsytbik4yze@wittgenstein

Signed-off-by: Jan Kara <jack@suse.cz>

parent 8c721cb0

arch/alpha/kernel/syscalls/syscall.tbl

+1 −1

Original line number	Diff line number	Diff line
		@@ -482,7 +482,7 @@
		550 common process_madvise sys_process_madvise
		551 common epoll_pwait2 sys_epoll_pwait2
		552 common mount_setattr sys_mount_setattr
		553 common quotactl_path sys_quotactl_path
		# 553 reserved for quotactl_path
		554 common landlock_create_ruleset sys_landlock_create_ruleset
		555 common landlock_add_rule sys_landlock_add_rule
		556 common landlock_restrict_self sys_landlock_restrict_self

arch/arm/tools/syscall.tbl

+1 −1

Original line number	Diff line number	Diff line
		@@ -456,7 +456,7 @@
		440 common process_madvise sys_process_madvise
		441 common epoll_pwait2 sys_epoll_pwait2
		442 common mount_setattr sys_mount_setattr
		443 common quotactl_path sys_quotactl_path
		# 443 reserved for quotactl_path
		444 common landlock_create_ruleset sys_landlock_create_ruleset
		445 common landlock_add_rule sys_landlock_add_rule
		446 common landlock_restrict_self sys_landlock_restrict_self

arch/arm64/include/asm/unistd32.h

+1 −2

Original line number	Diff line number	Diff line
		@@ -893,8 +893,7 @@ __SYSCALL(__NR_process_madvise, sys_process_madvise)
		__SYSCALL(__NR_epoll_pwait2, compat_sys_epoll_pwait2)
		#define __NR_mount_setattr 442
		__SYSCALL(__NR_mount_setattr, sys_mount_setattr)
		#define __NR_quotactl_path 443
		__SYSCALL(__NR_quotactl_path, sys_quotactl_path)
		/* 443 is reserved for quotactl_path */
		#define __NR_landlock_create_ruleset 444
		__SYSCALL(__NR_landlock_create_ruleset, sys_landlock_create_ruleset)
		#define __NR_landlock_add_rule 445

arch/ia64/kernel/syscalls/syscall.tbl

+1 −1

Original line number	Diff line number	Diff line
		@@ -363,7 +363,7 @@
		440 common process_madvise sys_process_madvise
		441 common epoll_pwait2 sys_epoll_pwait2
		442 common mount_setattr sys_mount_setattr
		443 common quotactl_path sys_quotactl_path
		# 443 reserved for quotactl_path
		444 common landlock_create_ruleset sys_landlock_create_ruleset
		445 common landlock_add_rule sys_landlock_add_rule
		446 common landlock_restrict_self sys_landlock_restrict_self

arch/m68k/kernel/syscalls/syscall.tbl

+1 −1

Original line number	Diff line number	Diff line
		@@ -442,7 +442,7 @@
		440 common process_madvise sys_process_madvise
		441 common epoll_pwait2 sys_epoll_pwait2
		442 common mount_setattr sys_mount_setattr
		443 common quotactl_path sys_quotactl_path
		# 443 reserved for quotactl_path
		444 common landlock_create_ruleset sys_landlock_create_ruleset
		445 common landlock_add_rule sys_landlock_add_rule
		446 common landlock_restrict_self sys_landlock_restrict_self