diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-10 17:57:03 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-03-26 23:19:42 +1100 |
| commit | fd69d544b0e785b11699675154bdfe01a04538cd (patch) | |
| tree | 4fdb9efc31fcbb7d0196b0407ac6855ba06bf593 | |
| parent | 4b8cda58812c1e1bf79d37f2ddff3cf03b7025da (diff) | |
powerpc/syscalls: Use sys_old_select() in ppc_select()
Instead of opencodying the copy of parameters, use
the generic sys_old_select().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/4de983ad254739da1fe6e9f273baf387b7043ae0.1615398498.git.christophe.leroy@csgroup.eu
| -rw-r--r-- | arch/powerpc/include/asm/unistd.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/syscalls.c | 12 |
2 files changed, 3 insertions, 10 deletions
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index 700fcdac2e3c..b541c690a31c 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -40,6 +40,7 @@ #define __ARCH_WANT_SYS_SIGPROCMASK #ifdef CONFIG_PPC32 #define __ARCH_WANT_OLD_STAT +#define __ARCH_WANT_SYS_OLD_SELECT #endif #ifdef CONFIG_PPC64 #define __ARCH_WANT_SYS_TIME diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c index 078608ec2e92..a552c9e68d7e 100644 --- a/arch/powerpc/kernel/syscalls.c +++ b/arch/powerpc/kernel/syscalls.c @@ -82,16 +82,8 @@ int ppc_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct __kernel_old_timeval __user *tvp) { if ( (unsigned long)n >= 4096 ) - { - unsigned long __user *buffer = (unsigned long __user *)n; - if (!access_ok(buffer, 5*sizeof(unsigned long)) - || __get_user(n, buffer) - || __get_user(inp, ((fd_set __user * __user *)(buffer+1))) - || __get_user(outp, ((fd_set __user * __user *)(buffer+2))) - || __get_user(exp, ((fd_set __user * __user *)(buffer+3))) - || __get_user(tvp, ((struct __kernel_old_timeval __user * __user *)(buffer+4)))) - return -EFAULT; - } + return sys_old_select((void __user *)n); + return sys_select(n, inp, outp, exp, tvp); } #endif |