diff options
| author | Andi Kleen | 2006-09-26 10:52:40 +0200 |
|---|---|---|
| committer | Andi Kleen | 2006-09-26 10:52:40 +0200 |
| commit | 26c13f2b5bbb03f798f8907db20296347e6c7ca6 (patch) | |
| tree | 130d060354b40933fd819c8798759cac1cebe406 /arch/x86_64 | |
| parent | 758333458aa719bfc26ec16eafd4ad3a9e96014d (diff) | |
[PATCH] Check return values of __copy_to_user in uname emulation
Quietens some new warnings
Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/ia32/sys_ia32.c | 28 |
1 files changed, 16 insertions, 12 deletions
diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c index 33cd0a4fe388..b0e82c7947dc 100644 --- a/arch/x86_64/ia32/sys_ia32.c +++ b/arch/x86_64/ia32/sys_ia32.c @@ -780,7 +780,7 @@ asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len, asmlinkage long sys32_olduname(struct oldold_utsname __user * name) { - int error; + int err; if (!name) return -EFAULT; @@ -789,27 +789,31 @@ asmlinkage long sys32_olduname(struct oldold_utsname __user * name) down_read(&uts_sem); - error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN); - __put_user(0,name->sysname+__OLD_UTS_LEN); - __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN); - __put_user(0,name->nodename+__OLD_UTS_LEN); - __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN); - __put_user(0,name->release+__OLD_UTS_LEN); - __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN); - __put_user(0,name->version+__OLD_UTS_LEN); + err = __copy_to_user(&name->sysname,&system_utsname.sysname, + __OLD_UTS_LEN); + err |= __put_user(0,name->sysname+__OLD_UTS_LEN); + err |= __copy_to_user(&name->nodename,&system_utsname.nodename, + __OLD_UTS_LEN); + err |= __put_user(0,name->nodename+__OLD_UTS_LEN); + err |= __copy_to_user(&name->release,&system_utsname.release, + __OLD_UTS_LEN); + err |= __put_user(0,name->release+__OLD_UTS_LEN); + err |= __copy_to_user(&name->version,&system_utsname.version, + __OLD_UTS_LEN); + err |= __put_user(0,name->version+__OLD_UTS_LEN); { char *arch = "x86_64"; if (personality(current->personality) == PER_LINUX32) arch = "i686"; - __copy_to_user(&name->machine,arch,strlen(arch)+1); + err |= __copy_to_user(&name->machine,arch,strlen(arch)+1); } up_read(&uts_sem); - error = error ? -EFAULT : 0; + err = err ? -EFAULT : 0; - return error; + return err; } long sys32_uname(struct old_utsname __user * name) |