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 5622578742fdde44e9c6a28955923438795f1b4e..3000a2e8ee21734d1759f2f4b208f5e68e63d4a3 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 c7679d7db98b0cf689b9d549569effb71ca72128..28e03b5fec0044da777eaf5fa8efc5f3a6e87df4 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 7859749d6628a5d0bf4ed758d03b25e5d3c0ac19..5dab69d2c22bf2074acee8be2df2e25c9521ab39 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 1ee8e736a48e37d73c5137e17154741777292a61..bb11fe4c875af9c4b03362bc8e15310bab2da3d5 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 0dd019dc21362d18360269261f4f69977aa1cf3b..79c2d24c89ddade58fc6161c1d917edc0df11768 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 2ac716984ca2869112ad4847c56eda8803dc83f7..b11395a20c203769a55bc32b97e84d5c389206d1 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 5e009665725104d960b1c0a1d066a4470f324abc..9220909526f9b2246951e69f447abc6f2c4df04d 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 9974f5f8e49bce05819434ff65479b98caf85b91..9cd1c34f31b5040434060a7b242be5946bd5c988 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 39d6e71e57b608866fda81de210974076d0ca8cb..d560c467a8c697b8e01bc4d66910d2a15bb27d37 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 5ac80b83d745e19020d37af6175b6da495a9a1ca..aabc37f8cae3a4248433cbbbb2af139badf75aa2 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 2e68fbb57cc66de2e451c9e9721d425d9d76d9c1..8f052ff4058ce5534327ea64550af52bff5f5de2 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 7e4a2aba366df088e153856f93f94cb0be0a2b4e..0690263df1dd0b58268941074441cb4e820744bc 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 f47a0dc5544551961efff6287c860ab347f90f05..0b91499ebdcfc2f67dfd597a66186cfea4d64280 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 b9e1c0e735b72b6ea50a862e401dd3afa39eb7f7..e34cc30ef22ced28c550699ab9973ac6b955a90e 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 28a1423ce32ee54e4e9b193d8f104b828acb5c96..4bbc267fb36bb9c8d07df4d4bd0b773f6bb1dc34 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 ecd551b08d05256af7235764c72d711460b2d58a..ce18119ea0d0f0c6deaf54959a9a7de1ed2e89ef 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 9d76d433d3d67012b73ae48fc7232e0294a92973..fd2f30227d961d7e356045142c1a8bb33044b269 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