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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-04 21:54:05 +0100
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 20:15:47 +0200
commitab0d1e85bfd0c25260f02cd3708d5abdfb5b5a9c (patch)
tree8603d1aab505a1c8c023576cb599e1b541ebc944
parentcb0b476ab12ca3bd9dd9122047660f3a73e8d647 (diff)
fs/quota: use COMPAT_SYSCALL_DEFINE for sys32_quotactl()
While sys32_quotactl() is only needed on x86, it can use the recommended COMPAT_SYSCALL_DEFINEx() machinery for its setup. Acked-by: Jan Kara <jack@suse.cz> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
-rw-r--r--arch/x86/entry/syscalls/syscall_32.tbl2
-rw-r--r--fs/quota/compat.c5
-rw-r--r--include/linux/compat.h3
-rw-r--r--include/linux/syscalls.h2
-rw-r--r--kernel/sys_ni.c2
5 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index ef6edaf285cd..c58f75b088c5 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -137,7 +137,7 @@
128 i386 init_module sys_init_module
129 i386 delete_module sys_delete_module
130 i386 get_kernel_syms
-131 i386 quotactl sys_quotactl sys32_quotactl
+131 i386 quotactl sys_quotactl compat_sys_quotactl32
132 i386 getpgid sys_getpgid
133 i386 fchdir sys_fchdir
134 i386 bdflush sys_bdflush
diff --git a/fs/quota/compat.c b/fs/quota/compat.c
index 1577a2fd51f4..c30572857619 100644
--- a/fs/quota/compat.c
+++ b/fs/quota/compat.c
@@ -41,8 +41,9 @@ struct compat_fs_quota_stat {
__u16 qs_iwarnlimit;
};
-asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
- qid_t id, void __user *addr)
+COMPAT_SYSCALL_DEFINE4(quotactl32, unsigned int, cmd,
+ const char __user *, special, qid_t, id,
+ void __user *, addr)
{
unsigned int cmds;
struct if_dqblk __user *dqblk;
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 16c3027074a2..f1649a5e6716 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -461,6 +461,9 @@ asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
const struct compat_iovec __user *vec,
compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
+asmlinkage long compat_sys_quotactl32(unsigned int cmd,
+ const char __user *special, qid_t id, void __user *addr);
+
#ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
asmlinkage long compat_sys_preadv64(unsigned long fd,
const struct compat_iovec __user *vec,
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index a63e21e7a3af..6ab7ed71a8b6 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -241,8 +241,6 @@ static inline void addr_limit_user_check(void)
#endif
}
-asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
- qid_t id, void __user *addr);
asmlinkage long sys_time(time_t __user *tloc);
asmlinkage long sys_stime(time_t __user *tptr);
asmlinkage long sys_gettimeofday(struct timeval __user *tv,
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index b5189762d275..951dbda5c2b4 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -18,7 +18,7 @@ asmlinkage long sys_ni_syscall(void)
}
cond_syscall(sys_quotactl);
-cond_syscall(sys32_quotactl);
+cond_syscall(compat_sys_quotactl32);
cond_syscall(sys_acct);
cond_syscall(sys_lookup_dcookie);
cond_syscall(compat_sys_lookup_dcookie);