quota: Disable quotactl_path syscall

In commit fa8b90070a80 ("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>

diff --git a/arch/alpha/kernel/syscalls/syscall.tbl b/arch/alpha/kernel/syscalls/syscall.tbl
index 5622578..3000a2e 100644 (file)
--- a/arch/alpha/kernel/syscalls/syscall.tbl
+++ b/arch/alpha/kernel/syscalls/syscall.tbl
@@ -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

diff --git a/arch/arm/tools/syscall.tbl b/arch/arm/tools/syscall.tbl
index c7679d7..28e03b5 100644 (file)
--- a/arch/arm/tools/syscall.tbl
+++ b/arch/arm/tools/syscall.tbl
@@ -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

diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index 7859749..5dab69d 100644 (file)
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -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

diff --git a/arch/ia64/kernel/syscalls/syscall.tbl b/arch/ia64/kernel/syscalls/syscall.tbl
index 1ee8e73..bb11fe4 100644 (file)
--- a/arch/ia64/kernel/syscalls/syscall.tbl
+++ b/arch/ia64/kernel/syscalls/syscall.tbl
@@ -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

diff --git a/arch/m68k/kernel/syscalls/syscall.tbl b/arch/m68k/kernel/syscalls/syscall.tbl
index 0dd019d..79c2d24 100644 (file)
--- a/arch/m68k/kernel/syscalls/syscall.tbl
+++ b/arch/m68k/kernel/syscalls/syscall.tbl
@@ -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

diff --git a/arch/microblaze/kernel/syscalls/syscall.tbl b/arch/microblaze/kernel/syscalls/syscall.tbl
index 2ac7169..b11395a 100644 (file)
--- a/arch/microblaze/kernel/syscalls/syscall.tbl
+++ b/arch/microblaze/kernel/syscalls/syscall.tbl
@@ -448,7 +448,7 @@
 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

diff --git a/arch/mips/kernel/syscalls/syscall_n32.tbl b/arch/mips/kernel/syscalls/syscall_n32.tbl
index 5e00966..9220909 100644 (file)
--- a/arch/mips/kernel/syscalls/syscall_n32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_n32.tbl
@@ -381,7 +381,7 @@
 440    n32     process_madvise                 sys_process_madvise
 441    n32     epoll_pwait2                    compat_sys_epoll_pwait2
 442    n32     mount_setattr                   sys_mount_setattr
-443    n32     quotactl_path                   sys_quotactl_path
+# 443 reserved for quotactl_path
 444    n32     landlock_create_ruleset         sys_landlock_create_ruleset
 445    n32     landlock_add_rule               sys_landlock_add_rule
 446    n32     landlock_restrict_self          sys_landlock_restrict_self

diff --git a/arch/mips/kernel/syscalls/syscall_n64.tbl b/arch/mips/kernel/syscalls/syscall_n64.tbl
index 9974f5f..9cd1c34 100644 (file)
--- a/arch/mips/kernel/syscalls/syscall_n64.tbl
+++ b/arch/mips/kernel/syscalls/syscall_n64.tbl
@@ -357,7 +357,7 @@
 440    n64     process_madvise                 sys_process_madvise
 441    n64     epoll_pwait2                    sys_epoll_pwait2
 442    n64     mount_setattr                   sys_mount_setattr
-443    n64     quotactl_path                   sys_quotactl_path
+# 443 reserved for quotactl_path
 444    n64     landlock_create_ruleset         sys_landlock_create_ruleset
 445    n64     landlock_add_rule               sys_landlock_add_rule
 446    n64     landlock_restrict_self          sys_landlock_restrict_self

diff --git a/arch/mips/kernel/syscalls/syscall_o32.tbl b/arch/mips/kernel/syscalls/syscall_o32.tbl
index 39d6e71..d560c46 100644 (file)
--- a/arch/mips/kernel/syscalls/syscall_o32.tbl
+++ b/arch/mips/kernel/syscalls/syscall_o32.tbl
@@ -430,7 +430,7 @@
 440    o32     process_madvise                 sys_process_madvise
 441    o32     epoll_pwait2                    sys_epoll_pwait2                compat_sys_epoll_pwait2
 442    o32     mount_setattr                   sys_mount_setattr
-443    o32     quotactl_path                   sys_quotactl_path
+# 443 reserved for quotactl_path
 444    o32     landlock_create_ruleset         sys_landlock_create_ruleset
 445    o32     landlock_add_rule               sys_landlock_add_rule
 446    o32     landlock_restrict_self          sys_landlock_restrict_self

diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl
index 5ac80b8..aabc37f 100644 (file)
--- a/arch/parisc/kernel/syscalls/syscall.tbl
+++ b/arch/parisc/kernel/syscalls/syscall.tbl
@@ -440,7 +440,7 @@
 440    common  process_madvise                 sys_process_madvise
 441    common  epoll_pwait2                    sys_epoll_pwait2                compat_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

diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl b/arch/powerpc/kernel/syscalls/syscall.tbl
index 2e68fbb..8f052ff 100644 (file)
--- a/arch/powerpc/kernel/syscalls/syscall.tbl
+++ b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -522,7 +522,7 @@
 440    common  process_madvise                 sys_process_madvise
 441    common  epoll_pwait2                    sys_epoll_pwait2                compat_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

diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index 7e4a2ab..0690263 100644 (file)
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -445,7 +445,7 @@
 440  common    process_madvise         sys_process_madvise             sys_process_madvise
 441  common    epoll_pwait2            sys_epoll_pwait2                compat_sys_epoll_pwait2
 442  common    mount_setattr           sys_mount_setattr               sys_mount_setattr
-443  common    quotactl_path           sys_quotactl_path               sys_quotactl_path
+# 443 reserved for quotactl_path
 444  common    landlock_create_ruleset sys_landlock_create_ruleset     sys_landlock_create_ruleset
 445  common    landlock_add_rule       sys_landlock_add_rule           sys_landlock_add_rule
 446  common    landlock_restrict_self  sys_landlock_restrict_self      sys_landlock_restrict_self

diff --git a/arch/sh/kernel/syscalls/syscall.tbl b/arch/sh/kernel/syscalls/syscall.tbl
index f47a0dc..0b91499 100644 (file)
--- a/arch/sh/kernel/syscalls/syscall.tbl
+++ b/arch/sh/kernel/syscalls/syscall.tbl
@@ -445,7 +445,7 @@
 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

diff --git a/arch/sparc/kernel/syscalls/syscall.tbl b/arch/sparc/kernel/syscalls/syscall.tbl
index b9e1c0e..e34cc30 100644 (file)
--- a/arch/sparc/kernel/syscalls/syscall.tbl
+++ b/arch/sparc/kernel/syscalls/syscall.tbl
@@ -488,7 +488,7 @@
 440    common  process_madvise                 sys_process_madvise
 441    common  epoll_pwait2                    sys_epoll_pwait2                compat_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

diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index 28a1423..4bbc267 100644 (file)
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -447,7 +447,7 @@
 440    i386    process_madvise         sys_process_madvise
 441    i386    epoll_pwait2            sys_epoll_pwait2                compat_sys_epoll_pwait2
 442    i386    mount_setattr           sys_mount_setattr
-443    i386    quotactl_path           sys_quotactl_path
+# 443 reserved for quotactl_path
 444    i386    landlock_create_ruleset sys_landlock_create_ruleset
 445    i386    landlock_add_rule       sys_landlock_add_rule
 446    i386    landlock_restrict_self  sys_landlock_restrict_self

diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
index ecd551b..ce18119 100644 (file)
--- a/arch/x86/entry/syscalls/syscall_64.tbl
+++ b/arch/x86/entry/syscalls/syscall_64.tbl
@@ -364,7 +364,7 @@
 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

diff --git a/arch/xtensa/kernel/syscalls/syscall.tbl b/arch/xtensa/kernel/syscalls/syscall.tbl
index 9d76d43..fd2f302 100644 (file)
--- a/arch/xtensa/kernel/syscalls/syscall.tbl
+++ b/arch/xtensa/kernel/syscalls/syscall.tbl
@@ -413,7 +413,7 @@
 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