diff options
| -rw-r--r-- | arch/ia64/ia32/ia32_entry.S | 2 | ||||
| -rw-r--r-- | arch/ia64/ia32/sys_ia32.c | 68 | ||||
| -rw-r--r-- | arch/mips/kernel/linux32.c | 44 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-n32.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-o32.S | 2 | ||||
| -rw-r--r-- | arch/parisc/kernel/sys_parisc32.c | 64 | ||||
| -rw-r--r-- | arch/parisc/kernel/syscall_table.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/sys_ppc32.c | 67 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_linux.c | 45 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_wrapper.S | 6 | ||||
| -rw-r--r-- | arch/s390/kernel/syscalls.S | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/sys_sparc32.c | 64 | ||||
| -rw-r--r-- | arch/sparc64/kernel/systbls.S | 2 | ||||
| -rw-r--r-- | arch/x86_64/ia32/ia32entry.S | 2 | ||||
| -rw-r--r-- | arch/x86_64/ia32/sys_ia32.c | 66 | ||||
| -rw-r--r-- | include/linux/kernel.h | 3 | ||||
| -rw-r--r-- | kernel/compat.c | 66 | ||||
| -rw-r--r-- | kernel/timer.c | 58 |
18 files changed, 112 insertions, 453 deletions
diff --git a/arch/ia64/ia32/ia32_entry.S b/arch/ia64/ia32/ia32_entry.S index a32cd59b81ed..687e5fdc9683 100644 --- a/arch/ia64/ia32/ia32_entry.S +++ b/arch/ia64/ia32/ia32_entry.S @@ -326,7 +326,7 @@ ia32_syscall_table: data8 sys_ni_syscall data8 compat_sys_wait4 data8 sys_swapoff /* 115 */ - data8 sys32_sysinfo + data8 compat_sys_sysinfo data8 sys32_ipc data8 sys_fsync data8 sys32_sigreturn diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c index 957681c39ad9..d430d36ae49d 100644 --- a/arch/ia64/ia32/sys_ia32.c +++ b/arch/ia64/ia32/sys_ia32.c @@ -2209,74 +2209,6 @@ sys32_fstat64 (unsigned int fd, struct stat64 __user *statbuf) return ret; } -struct sysinfo32 { - s32 uptime; - u32 loads[3]; - u32 totalram; - u32 freeram; - u32 sharedram; - u32 bufferram; - u32 totalswap; - u32 freeswap; - u16 procs; - u16 pad; - u32 totalhigh; - u32 freehigh; - u32 mem_unit; - char _f[8]; -}; - -asmlinkage long -sys32_sysinfo (struct sysinfo32 __user *info) -{ - struct sysinfo s; - long ret, err; - int bitcount = 0; - mm_segment_t old_fs = get_fs(); - - set_fs(KERNEL_DS); - ret = sys_sysinfo((struct sysinfo __user *) &s); - set_fs(old_fs); - /* Check to see if any memory value is too large for 32-bit and - * scale down if needed. - */ - if ((s.totalram >> 32) || (s.totalswap >> 32)) { - while (s.mem_unit < PAGE_SIZE) { - s.mem_unit <<= 1; - bitcount++; - } - s.totalram >>= bitcount; - s.freeram >>= bitcount; - s.sharedram >>= bitcount; - s.bufferram >>= bitcount; - s.totalswap >>= bitcount; - s.freeswap >>= bitcount; - s.totalhigh >>= bitcount; - s.freehigh >>= bitcount; - } - - if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) - return -EFAULT; - - err = __put_user(s.uptime, &info->uptime); - err |= __put_user(s.loads[0], &info->loads[0]); - err |= __put_user(s.loads[1], &info->loads[1]); - err |= __put_user(s.loads[2], &info->loads[2]); - err |= __put_user(s.totalram, &info->totalram); - err |= __put_user(s.freeram, &info->freeram); - err |= __put_user(s.sharedram, &info->sharedram); - err |= __put_user(s.bufferram, &info->bufferram); - err |= __put_user(s.totalswap, &info->totalswap); - err |= __put_user(s.freeswap, &info->freeswap); - err |= __put_user(s.procs, &info->procs); - err |= __put_user (s.totalhigh, &info->totalhigh); - err |= __put_user (s.freehigh, &info->freehigh); - err |= __put_user (s.mem_unit, &info->mem_unit); - if (err) - return -EFAULT; - return ret; -} - asmlinkage long sys32_sched_rr_get_interval (pid_t pid, struct compat_timespec __user *interval) { diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index 0b8ce59429a8..ca7ad78f4def 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -193,50 +193,6 @@ sysn32_waitid(int which, compat_pid_t pid, return ret; } -struct sysinfo32 { - s32 uptime; - u32 loads[3]; - u32 totalram; - u32 freeram; - u32 sharedram; - u32 bufferram; - u32 totalswap; - u32 freeswap; - u16 procs; - u32 totalhigh; - u32 freehigh; - u32 mem_unit; - char _f[8]; -}; - -asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info) -{ - struct sysinfo s; - int ret, err; - mm_segment_t old_fs = get_fs (); - - set_fs (KERNEL_DS); - ret = sys_sysinfo((struct sysinfo __user *)&s); - set_fs (old_fs); - err = put_user (s.uptime, &info->uptime); - err |= __put_user (s.loads[0], &info->loads[0]); - err |= __put_user (s.loads[1], &info->loads[1]); - err |= __put_user (s.loads[2], &info->loads[2]); - err |= __put_user (s.totalram, &info->totalram); - err |= __put_user (s.freeram, &info->freeram); - err |= __put_user (s.sharedram, &info->sharedram); - err |= __put_user (s.bufferram, &info->bufferram); - err |= __put_user (s.totalswap, &info->totalswap); - err |= __put_user (s.freeswap, &info->freeswap); - err |= __put_user (s.procs, &info->procs); - err |= __put_user (s.totalhigh, &info->totalhigh); - err |= __put_user (s.freehigh, &info->freehigh); - err |= __put_user (s.mem_unit, &info->mem_unit); - if (err) - return -EFAULT; - return ret; -} - #define RLIM_INFINITY32 0x7fffffff #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index 39add2341aa2..ee8802b59758 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -217,7 +217,7 @@ EXPORT(sysn32_call_table) PTR sys32_gettimeofday PTR compat_sys_getrlimit /* 6095 */ PTR compat_sys_getrusage - PTR sys32_sysinfo + PTR compat_sys_sysinfo PTR compat_sys_times PTR sys32_ptrace PTR sys_getuid /* 6100 */ diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index c58b8e0105ea..c5f590ca99b0 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -321,7 +321,7 @@ sys_call_table: PTR sys_ni_syscall /* sys_vm86 */ PTR compat_sys_wait4 PTR sys_swapoff /* 4115 */ - PTR sys32_sysinfo + PTR compat_sys_sysinfo PTR sys32_ipc PTR sys_fsync PTR sys32_sigreturn diff --git a/arch/parisc/kernel/sys_parisc32.c b/arch/parisc/kernel/sys_parisc32.c index 29be4377aca6..ce3245f87fdd 100644 --- a/arch/parisc/kernel/sys_parisc32.c +++ b/arch/parisc/kernel/sys_parisc32.c @@ -579,70 +579,6 @@ asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *off } -struct sysinfo32 { - s32 uptime; - u32 loads[3]; - u32 totalram; - u32 freeram; - u32 sharedram; - u32 bufferram; - u32 totalswap; - u32 freeswap; - unsigned short procs; - u32 totalhigh; - u32 freehigh; - u32 mem_unit; - char _f[12]; -}; - -/* We used to call sys_sysinfo and translate the result. But sys_sysinfo - * undoes the good work done elsewhere, and rather than undoing the - * damage, I decided to just duplicate the code from sys_sysinfo here. - */ - -asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info) -{ - struct sysinfo val; - int err; - unsigned long seq; - - /* We don't need a memset here because we copy the - * struct to userspace once element at a time. - */ - - do { - seq = read_seqbegin(&xtime_lock); - val.uptime = jiffies / HZ; - - val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT); - val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT); - val.loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT); - - val.procs = nr_threads; - } while (read_seqretry(&xtime_lock, seq)); - - - si_meminfo(&val); - si_swapinfo(&val); - - err = put_user (val.uptime, &info->uptime); - err |= __put_user (val.loads[0], &info->loads[0]); - err |= __put_user (val.loads[1], &info->loads[1]); - err |= __put_user (val.loads[2], &info->loads[2]); - err |= __put_user (val.totalram, &info->totalram); - err |= __put_user (val.freeram, &info->freeram); - err |= __put_user (val.sharedram, &info->sharedram); - err |= __put_user (val.bufferram, &info->bufferram); - err |= __put_user (val.totalswap, &info->totalswap); - err |= __put_user (val.freeswap, &info->freeswap); - err |= __put_user (val.procs, &info->procs); - err |= __put_user (val.totalhigh, &info->totalhigh); - err |= __put_user (val.freehigh, &info->freehigh); - err |= __put_user (val.mem_unit, &info->mem_unit); - return err ? -EFAULT : 0; -} - - /* lseek() needs a wrapper because 'offset' can be negative, but the top * half of the argument has been zeroed by syscall.S. */ diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index 701d66a596e8..be8eb9a0d24a 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -197,7 +197,7 @@ /* struct rusage contains longs... */ ENTRY_COMP(wait4) ENTRY_SAME(swapoff) /* 115 */ - ENTRY_DIFF(sysinfo) + ENTRY_COMP(sysinfo) ENTRY_SAME(shutdown) ENTRY_SAME(fsync) ENTRY_SAME(madvise) diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c index 03a2a2f30d66..673e8d9df7f5 100644 --- a/arch/powerpc/kernel/sys_ppc32.c +++ b/arch/powerpc/kernel/sys_ppc32.c @@ -198,73 +198,6 @@ static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i) __put_user(i->tv_usec, &o->tv_usec))); } -struct sysinfo32 { - s32 uptime; - u32 loads[3]; - u32 totalram; - u32 freeram; - u32 sharedram; - u32 bufferram; - u32 totalswap; - u32 freeswap; - unsigned short procs; - unsigned short pad; - u32 totalhigh; - u32 freehigh; - u32 mem_unit; - char _f[20-2*sizeof(int)-sizeof(int)]; -}; - -asmlinkage long compat_sys_sysinfo(struct sysinfo32 __user *info) -{ - struct sysinfo s; - int ret, err; - int bitcount=0; - mm_segment_t old_fs = get_fs (); - - /* The __user cast is valid due to set_fs() */ - set_fs (KERNEL_DS); - ret = sys_sysinfo((struct sysinfo __user *)&s); - set_fs (old_fs); - - /* Check to see if any memory value is too large for 32-bit and - * scale down if needed. - */ - if ((s.totalram >> 32) || (s.totalswap >> 32)) { - while (s.mem_unit < PAGE_SIZE) { - s.mem_unit <<= 1; - bitcount++; - } - s.totalram >>=bitcount; - s.freeram >>= bitcount; - s.sharedram >>= bitcount; - s.bufferram >>= bitcount; - s.totalswap >>= bitcount; - s.freeswap >>= bitcount; - s.totalhigh >>= bitcount; - s.freehigh >>= bitcount; - } - - err = put_user (s.uptime, &info->uptime); - err |= __put_user (s.loads[0], &info->loads[0]); - err |= __put_user (s.loads[1], &info->loads[1]); - err |= __put_user (s.loads[2], &info->loads[2]); - err |= __put_user (s.totalram, &info->totalram); - err |= __put_user (s.freeram, &info->freeram); - err |= __put_user (s.sharedram, &info->sharedram); - err |= __put_user (s.bufferram, &info->bufferram); - err |= __put_user (s.totalswap, &info->totalswap); - err |= __put_user (s.freeswap, &info->freeswap); - err |= __put_user (s.procs, &info->procs); - err |= __put_user (s.totalhigh, &info->totalhigh); - err |= __put_user (s.freehigh, &info->freehigh); - err |= __put_user (s.mem_unit, &info->mem_unit); - if (err) - return -EFAULT; - - return ret; -} - diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index 666bb6daa148..664c669b1856 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -398,51 +398,6 @@ int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) return err; } -struct sysinfo32 { - s32 uptime; - u32 loads[3]; - u32 totalram; - u32 freeram; - u32 sharedram; - u32 bufferram; - u32 totalswap; - u32 freeswap; - unsigned short procs; - unsigned short pads; - u32 totalhigh; - u32 freehigh; - unsigned int mem_unit; - char _f[8]; -}; - -asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info) -{ - struct sysinfo s; - int ret, err; - mm_segment_t old_fs = get_fs (); - - set_fs (KERNEL_DS); - ret = sys_sysinfo((struct sysinfo __force __user *) &s); - set_fs (old_fs); - err = put_user (s.uptime, &info->uptime); - err |= __put_user (s.loads[0], &info->loads[0]); - err |= __put_user (s.loads[1], &info->loads[1]); - err |= __put_user (s.loads[2], &info->loads[2]); - err |= __put_user (s.totalram, &info->totalram); - err |= __put_user (s.freeram, &info->freeram); - err |= __put_user (s.sharedram, &info->sharedram); - err |= __put_user (s.bufferram, &info->bufferram); - err |= __put_user (s.totalswap, &info->totalswap); - err |= __put_user (s.freeswap, &info->freeswap); - err |= __put_user (s.procs, &info->procs); - err |= __put_user (s.totalhigh, &info->totalhigh); - err |= __put_user (s.freehigh, &info->freehigh); - err |= __put_user (s.mem_unit, &info->mem_unit); - if (err) - return -EFAULT; - return ret; -} - asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) { diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 71e54ef0931e..97901296894e 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -517,10 +517,10 @@ sys32_swapoff_wrapper: llgtr %r2,%r2 # const char * jg sys_swapoff # branch to system call - .globl sys32_sysinfo_wrapper -sys32_sysinfo_wrapper: + .globl compat_sys_sysinfo_wrapper +compat_sys_sysinfo_wrapper: llgtr %r2,%r2 # struct sysinfo_emu31 * - jg sys32_sysinfo # branch to system call + jg compat_sys_sysinfo # branch to system call .globl sys32_ipc_wrapper sys32_ipc_wrapper: diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index a4ceae3dbcf1..a52c44455bf0 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -124,7 +124,7 @@ NI_SYSCALL /* old "idle" system call */ NI_SYSCALL /* vm86old for i386 */ SYSCALL(sys_wait4,sys_wait4,compat_sys_wait4_wrapper) SYSCALL(sys_swapoff,sys_swapoff,sys32_swapoff_wrapper) /* 115 */ -SYSCALL(sys_sysinfo,sys_sysinfo,sys32_sysinfo_wrapper) +SYSCALL(sys_sysinfo,sys_sysinfo,compat_sys_sysinfo_wrapper) SYSCALL(sys_ipc,sys_ipc,sys32_ipc_wrapper) SYSCALL(sys_fsync,sys_fsync,sys32_fsync_wrapper) SYSCALL(sys_sigreturn_glue,sys_sigreturn_glue,sys32_sigreturn_glue) diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c index e27cb71bd8e2..7876a0226285 100644 --- a/arch/sparc64/kernel/sys_sparc32.c +++ b/arch/sparc64/kernel/sys_sparc32.c @@ -459,70 +459,6 @@ asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2) return sys_sysfs(option, arg1, arg2); } -struct sysinfo32 { - s32 uptime; - u32 loads[3]; - u32 totalram; - u32 freeram; - u32 sharedram; - u32 bufferram; - u32 totalswap; - u32 freeswap; - unsigned short procs; - unsigned short pad; - u32 totalhigh; - u32 freehigh; - u32 mem_unit; - char _f[20-2*sizeof(int)-sizeof(int)]; -}; - -asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info) -{ - struct sysinfo s; - int ret, err; - int bitcount = 0; - mm_segment_t old_fs = get_fs (); - - set_fs(KERNEL_DS); - ret = sys_sysinfo((struct sysinfo __user *) &s); - set_fs(old_fs); - /* Check to see if any memory value is too large for 32-bit and - * scale down if needed. - */ - if ((s.totalram >> 32) || (s.totalswap >> 32)) { - while (s.mem_unit < PAGE_SIZE) { - s.mem_unit <<= 1; - bitcount++; - } - s.totalram >>= bitcount; - s.freeram >>= bitcount; - s.sharedram >>= bitcount; - s.bufferram >>= bitcount; - s.totalswap >>= bitcount; - s.freeswap >>= bitcount; - s.totalhigh >>= bitcount; - s.freehigh >>= bitcount; - } - - err = put_user (s.uptime, &info->uptime); - err |= __put_user (s.loads[0], &info->loads[0]); - err |= __put_user (s.loads[1], &info->loads[1]); - err |= __put_user (s.loads[2], &info->loads[2]); - err |= __put_user (s.totalram, &info->totalram); - err |= __put_user (s.freeram, &info->freeram); - err |= __put_user (s.sharedram, &info->sharedram); - err |= __put_user (s.bufferram, &info->bufferram); - err |= __put_user (s.totalswap, &info->totalswap); - err |= __put_user (s.freeswap, &info->freeswap); - err |= __put_user (s.procs, &info->procs); - err |= __put_user (s.totalhigh, &info->totalhigh); - err |= __put_user (s.freehigh, &info->freehigh); - err |= __put_user (s.mem_unit, &info->mem_unit); - if (err) - return -EFAULT; - return ret; -} - asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) { struct timespec t; diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S index 9a8026797ac0..948b7d2d5874 100644 --- a/arch/sparc64/kernel/systbls.S +++ b/arch/sparc64/kernel/systbls.S @@ -61,7 +61,7 @@ sys_call_table32: .word sys32_epoll_wait, sys32_ioprio_set, sys_getppid, sys32_sigaction, sys_sgetmask /*200*/ .word sys32_ssetmask, sys_sigsuspend, compat_sys_newlstat, sys_uselib, compat_sys_old_readdir .word sys32_readahead, sys32_socketcall, sys32_syslog, sys32_lookup_dcookie, sys32_fadvise64 -/*210*/ .word sys32_fadvise64_64, sys32_tgkill, sys32_waitpid, sys_swapoff, sys32_sysinfo +/*210*/ .word sys32_fadvise64_64, sys32_tgkill, sys32_waitpid, sys_swapoff, compat_sys_sysinfo .word sys32_ipc, sys32_sigreturn, sys_clone, sys32_ioprio_get, compat_sys_adjtimex /*220*/ .word sys32_sigprocmask, sys_ni_syscall, sys32_delete_module, sys_ni_syscall, sys32_getpgid .word sys32_bdflush, sys32_sysfs, sys_nis_syscall, sys32_setfsuid16, sys32_setfsgid16 diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S index b4aa875e175b..5f32cf4de5fb 100644 --- a/arch/x86_64/ia32/ia32entry.S +++ b/arch/x86_64/ia32/ia32entry.S @@ -515,7 +515,7 @@ ia32_sys_call_table: .quad sys32_vm86_warning /* vm86old */ .quad compat_sys_wait4 .quad sys_swapoff /* 115 */ - .quad sys32_sysinfo + .quad compat_sys_sysinfo .quad sys32_ipc .quad sys_fsync .quad stub32_sigreturn diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c index c9bac3af29d6..200fdde18d96 100644 --- a/arch/x86_64/ia32/sys_ia32.c +++ b/arch/x86_64/ia32/sys_ia32.c @@ -523,72 +523,6 @@ sys32_sysfs(int option, u32 arg1, u32 arg2) return sys_sysfs(option, arg1, arg2); } -struct sysinfo32 { - s32 uptime; - u32 loads[3]; - u32 totalram; - u32 freeram; - u32 sharedram; - u32 bufferram; - u32 totalswap; - u32 freeswap; - unsigned short procs; - unsigned short pad; - u32 totalhigh; - u32 freehigh; - u32 mem_unit; - char _f[20-2*sizeof(u32)-sizeof(int)]; -}; - -asmlinkage long -sys32_sysinfo(struct sysinfo32 __user *info) -{ - struct sysinfo s; - int ret; - mm_segment_t old_fs = get_fs (); - int bitcount = 0; - - set_fs (KERNEL_DS); - ret = sys_sysinfo((struct sysinfo __user *)&s); - set_fs (old_fs); - - /* Check to see if any memory value is too large for 32-bit and scale - * down if needed - */ - if ((s.totalram >> 32) || (s.totalswap >> 32)) { - while (s.mem_unit < PAGE_SIZE) { - s.mem_unit <<= 1; - bitcount++; - } - s.totalram >>= bitcount; - s.freeram >>= bitcount; - s.sharedram >>= bitcount; - s.bufferram >>= bitcount; - s.totalswap >>= bitcount; - s.freeswap >>= bitcount; - s.totalhigh >>= bitcount; - s.freehigh >>= bitcount; - } - - if (!access_ok(VERIFY_WRITE, info, sizeof(struct sysinfo32)) || - __put_user (s.uptime, &info->uptime) || - __put_user (s.loads[0], &info->loads[0]) || - __put_user (s.loads[1], &info->loads[1]) || - __put_user (s.loads[2], &info->loads[2]) || - __put_user (s.totalram, &info->totalram) || - __put_user (s.freeram, &info->freeram) || - __put_user (s.sharedram, &info->sharedram) || - __put_user (s.bufferram, &info->bufferram) || - __put_user (s.totalswap, &info->totalswap) || - __put_user (s.freeswap, &info->freeswap) || - __put_user (s.procs, &info->procs) || - __put_user (s.totalhigh, &info->totalhigh) || - __put_user (s.freehigh, &info->freehigh) || - __put_user (s.mem_unit, &info->mem_unit)) - return -EFAULT; - return 0; -} - asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) { diff --git a/include/linux/kernel.h b/include/linux/kernel.h index e1a429ada97f..7e861303cbde 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -313,6 +313,9 @@ static inline int __attribute__ ((format (printf, 1, 2))) pr_debug(const char * (void)__tmp; \ }) +struct sysinfo; +extern int do_sysinfo(struct sysinfo *info); + #endif /* __KERNEL__ */ #define SI_LOAD_SHIFT 16 diff --git a/kernel/compat.c b/kernel/compat.c index 6952dd057300..cebb4c28c039 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -1016,3 +1016,69 @@ asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, return sys_migrate_pages(pid, nr_bits + 1, old, new); } #endif + +struct compat_sysinfo { + s32 uptime; + u32 loads[3]; + u32 totalram; + u32 freeram; + u32 sharedram; + u32 bufferram; + u32 totalswap; + u32 freeswap; + u16 procs; + u16 pad; + u32 totalhigh; + u32 freehigh; + u32 mem_unit; + char _f[20-2*sizeof(u32)-sizeof(int)]; +}; + +asmlinkage long +compat_sys_sysinfo(struct compat_sysinfo __user *info) +{ + struct sysinfo s; + + do_sysinfo(&s); + + /* Check to see if any memory value is too large for 32-bit and scale + * down if needed + */ + if ((s.totalram >> 32) || (s.totalswap >> 32)) { + int bitcount = 0; + + while (s.mem_unit < PAGE_SIZE) { + s.mem_unit <<= 1; + bitcount++; + } + + s.totalram >>= bitcount; + s.freeram >>= bitcount; + s.sharedram >>= bitcount; + s.bufferram >>= bitcount; + s.totalswap >>= bitcount; + s.freeswap >>= bitcount; + s.totalhigh >>= bitcount; + s.freehigh >>= bitcount; + } + + if (!access_ok(VERIFY_WRITE, info, sizeof(struct compat_sysinfo)) || + __put_user (s.uptime, &info->uptime) || + __put_user (s.loads[0], &info->loads[0]) || + __put_user (s.loads[1], &info->loads[1]) || + __put_user (s.loads[2], &info->loads[2]) || + __put_user (s.totalram, &info->totalram) || + __put_user (s.freeram, &info->freeram) || + __put_user (s.sharedram, &info->sharedram) || + __put_user (s.bufferram, &info->bufferram) || + __put_user (s.totalswap, &info->totalswap) || + __put_user (s.freeswap, &info->freeswap) || + __put_user (s.procs, &info->procs) || + __put_user (s.totalhigh, &info->totalhigh) || + __put_user (s.freehigh, &info->freehigh) || + __put_user (s.mem_unit, &info->mem_unit)) + return -EFAULT; + + return 0; +} + diff --git a/kernel/timer.c b/kernel/timer.c index 31ab627df8a0..8533c3796082 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -1392,17 +1392,16 @@ asmlinkage long sys_gettid(void) } /** - * sys_sysinfo - fill in sysinfo struct + * do_sysinfo - fill in sysinfo struct * @info: pointer to buffer to fill */ -asmlinkage long sys_sysinfo(struct sysinfo __user *info) +int do_sysinfo(struct sysinfo *info) { - struct sysinfo val; unsigned long mem_total, sav_total; unsigned int mem_unit, bitcount; unsigned long seq; - memset((char *)&val, 0, sizeof(struct sysinfo)); + memset(info, 0, sizeof(struct sysinfo)); do { struct timespec tp; @@ -1422,17 +1421,17 @@ asmlinkage long sys_sysinfo(struct sysinfo __user *info) tp.tv_nsec = tp.tv_nsec - NSEC_PER_SEC; tp.tv_sec++; } - val.uptime = tp.tv_sec + (tp.tv_nsec ? 1 : 0); + info->uptime = tp.tv_sec + (tp.tv_nsec ? 1 : 0); - val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT); - val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT); - val.loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT); + info->loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT); + info->loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT); + info->loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT); - val.procs = nr_threads; + info->procs = nr_threads; } while (read_seqretry(&xtime_lock, seq)); - si_meminfo(&val); - si_swapinfo(&val); + si_meminfo(info); + si_swapinfo(info); /* * If the sum of all the available memory (i.e. ram + swap) @@ -1443,11 +1442,11 @@ asmlinkage long sys_sysinfo(struct sysinfo __user *info) * -Erik Andersen <andersee@debian.org> */ - mem_total = val.totalram + val.totalswap; - if (mem_total < val.totalram || mem_total < val.totalswap) + mem_total = info->totalram + info->totalswap; + if (mem_total < info->totalram || mem_total < info->totalswap) goto out; bitcount = 0; - mem_unit = val.mem_unit; + mem_unit = info->mem_unit; while (mem_unit > 1) { bitcount++; mem_unit >>= 1; @@ -1459,22 +1458,31 @@ asmlinkage long sys_sysinfo(struct sysinfo __user *info) /* * If mem_total did not overflow, multiply all memory values by - * val.mem_unit and set it to 1. This leaves things compatible + * info->mem_unit and set it to 1. This leaves things compatible * with 2.2.x, and also retains compatibility with earlier 2.4.x * kernels... */ - val.mem_unit = 1; - val.totalram <<= bitcount; - val.freeram <<= bitcount; - val.sharedram <<= bitcount; - val.bufferram <<= bitcount; - val.totalswap <<= bitcount; - val.freeswap <<= bitcount; - val.totalhigh <<= bitcount; - val.freehigh <<= bitcount; + info->mem_unit = 1; + info->totalram <<= bitcount; + info->freeram <<= bitcount; + info->sharedram <<= bitcount; + info->bufferram <<= bitcount; + info->totalswap <<= bitcount; + info->freeswap <<= bitcount; + info->totalhigh <<= bitcount; + info->freehigh <<= bitcount; + +out: + return 0; +} + +asmlinkage long sys_sysinfo(struct sysinfo __user *info) +{ + struct sysinfo val; + + do_sysinfo(&val); - out: if (copy_to_user(info, &val, sizeof(struct sysinfo))) return -EFAULT; |
