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android_kernel_motorola_sm6225/arch/mips/kernel/sysirix.c
Thomas Gleixner c08b8a4910 [PATCH] sys_alarm() unsigned signed conversion fixup 
alarm() calls the kernel with an unsigend int timeout in seconds.  The
value is stored in the tv_sec field of a struct timeval to setup the
itimer.  The tv_sec field of struct timeval is of type long, which causes
the tv_sec value to be negative on 32 bit machines if seconds > INT_MAX.

Before the hrtimer merge (pre 2.6.16) such a negative value was converted
to the maximum jiffies timeout by the timeval_to_jiffies conversion.  It's
not clear whether this was intended or just happened to be done by the
timeval_to_jiffies code.

hrtimers expect a timeval in canonical form and treat a negative timeout as
already expired.  This breaks the legitimate usage of alarm() with a
timeout value > INT_MAX seconds.

For 32 bit machines it is therefor necessary to limit the internal seconds
value to avoid API breakage.  Instead of doing this in all implementations
of sys_alarm the duplicated sys_alarm code is moved into a common function
in itimer.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 08:22:48 -08:00

2136 lines
50 KiB
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Raw Blame History

/*
* sysirix.c: IRIX system call emulation.
*
* Copyright (C) 1996 David S. Miller
* Copyright (C) 1997 Miguel de Icaza
* Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/binfmts.h>
#include <linux/capability.h>
#include <linux/highuid.h>
#include <linux/pagemap.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/slab.h>
#include <linux/swap.h>
#include <linux/errno.h>
#include <linux/time.h>
#include <linux/timex.h>
#include <linux/times.h>
#include <linux/elf.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/smp.h>
#include <linux/smp_lock.h>
#include <linux/utsname.h>
#include <linux/file.h>
#include <linux/vfs.h>
#include <linux/namei.h>
#include <linux/socket.h>
#include <linux/security.h>
#include <linux/syscalls.h>
#include <asm/ptrace.h>
#include <asm/page.h>
#include <asm/uaccess.h>
#include <asm/inventory.h>
/* 2,191 lines of complete and utter shit coming up... */
extern int max_threads;
/* The sysmp commands supported thus far. */
#define MP_NPROCS 1 /* # processor in complex */
#define MP_NAPROCS 2 /* # active processors in complex */
#define MP_PGSIZE 14 /* Return system page size in v1. */
asmlinkage int irix_sysmp(struct pt_regs *regs)
{
unsigned long cmd;
int base = 0;
int error = 0;
if(regs->regs[2] == 1000)
base = 1;
cmd = regs->regs[base + 4];
switch(cmd) {
case MP_PGSIZE:
error = PAGE_SIZE;
break;
case MP_NPROCS:
case MP_NAPROCS:
error = num_online_cpus();
break;
default:
printk("SYSMP[%s:%d]: Unsupported opcode %d\n",
current->comm, current->pid, (int)cmd);
error = -EINVAL;
break;
}
return error;
}
/* The prctl commands. */
#define PR_MAXPROCS 1 /* Tasks/user. */
#define PR_ISBLOCKED 2 /* If blocked, return 1. */
#define PR_SETSTACKSIZE 3 /* Set largest task stack size. */
#define PR_GETSTACKSIZE 4 /* Get largest task stack size. */
#define PR_MAXPPROCS 5 /* Num parallel tasks. */
#define PR_UNBLKONEXEC 6 /* When task exec/exit's, unblock. */
#define PR_SETEXITSIG 8 /* When task exit's, set signal. */
#define PR_RESIDENT 9 /* Make task unswappable. */
#define PR_ATTACHADDR 10 /* (Re-)Connect a vma to a task. */
#define PR_DETACHADDR 11 /* Disconnect a vma from a task. */
#define PR_TERMCHILD 12 /* Kill child if the parent dies. */
#define PR_GETSHMASK 13 /* Get the sproc() share mask. */
#define PR_GETNSHARE 14 /* Number of share group members. */
#define PR_COREPID 15 /* Add task pid to name when it core. */
#define PR_ATTACHADDRPERM 16 /* (Re-)Connect vma, with specified prot. */
#define PR_PTHREADEXIT 17 /* Kill a pthread, only for IRIX 6.[234] */
asmlinkage int irix_prctl(unsigned option, ...)
{
va_list args;
int error = 0;
va_start(args, option);
switch (option) {
case PR_MAXPROCS:
printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
current->comm, current->pid);
error = max_threads;
break;
case PR_ISBLOCKED: {
struct task_struct *task;
printk("irix_prctl[%s:%d]: Wants PR_ISBLOCKED\n",
current->comm, current->pid);
read_lock(&tasklist_lock);
task = find_task_by_pid(va_arg(args, pid_t));
error = -ESRCH;
if (error)
error = (task->run_list.next != NULL);
read_unlock(&tasklist_lock);
/* Can _your_ OS find this out that fast? */
break;
}
case PR_SETSTACKSIZE: {
long value = va_arg(args, long);
printk("irix_prctl[%s:%d]: Wants PR_SETSTACKSIZE<%08lx>\n",
current->comm, current->pid, (unsigned long) value);
if (value > RLIM_INFINITY)
value = RLIM_INFINITY;
if (capable(CAP_SYS_ADMIN)) {
task_lock(current->group_leader);
current->signal->rlim[RLIMIT_STACK].rlim_max =
current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
task_unlock(current->group_leader);
error = value;
break;
}
task_lock(current->group_leader);
if (value > current->signal->rlim[RLIMIT_STACK].rlim_max) {
error = -EINVAL;
task_unlock(current->group_leader);
break;
}
current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
task_unlock(current->group_leader);
error = value;
break;
}
case PR_GETSTACKSIZE:
printk("irix_prctl[%s:%d]: Wants PR_GETSTACKSIZE\n",
current->comm, current->pid);
error = current->signal->rlim[RLIMIT_STACK].rlim_cur;
break;
case PR_MAXPPROCS:
printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
current->comm, current->pid);
error = 1;
break;
case PR_UNBLKONEXEC:
printk("irix_prctl[%s:%d]: Wants PR_UNBLKONEXEC\n",
current->comm, current->pid);
error = -EINVAL;
break;
case PR_SETEXITSIG:
printk("irix_prctl[%s:%d]: Wants PR_SETEXITSIG\n",
current->comm, current->pid);
/* We can probably play some game where we set the task
* exit_code to some non-zero value when this is requested,
* and check whether exit_code is already set in do_exit().
*/
error = -EINVAL;
break;
case PR_RESIDENT:
printk("irix_prctl[%s:%d]: Wants PR_RESIDENT\n",
current->comm, current->pid);
error = 0; /* Compatibility indeed. */
break;
case PR_ATTACHADDR:
printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDR\n",
current->comm, current->pid);
error = -EINVAL;
break;
case PR_DETACHADDR:
printk("irix_prctl[%s:%d]: Wants PR_DETACHADDR\n",
current->comm, current->pid);
error = -EINVAL;
break;
case PR_TERMCHILD:
printk("irix_prctl[%s:%d]: Wants PR_TERMCHILD\n",
current->comm, current->pid);
error = -EINVAL;
break;
case PR_GETSHMASK:
printk("irix_prctl[%s:%d]: Wants PR_GETSHMASK\n",
current->comm, current->pid);
error = -EINVAL; /* Until I have the sproc() stuff in. */
break;
case PR_GETNSHARE:
error = 0; /* Until I have the sproc() stuff in. */
break;
case PR_COREPID:
printk("irix_prctl[%s:%d]: Wants PR_COREPID\n",
current->comm, current->pid);
error = -EINVAL;
break;
case PR_ATTACHADDRPERM:
printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDRPERM\n",
current->comm, current->pid);
error = -EINVAL;
break;
default:
printk("irix_prctl[%s:%d]: Non-existant opcode %d\n",
current->comm, current->pid, option);
error = -EINVAL;
break;
}
va_end(args);
return error;
}
#undef DEBUG_PROCGRPS
extern unsigned long irix_mapelf(int fd, struct elf_phdr __user *user_phdrp, int cnt);
extern int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
extern char *prom_getenv(char *name);
extern long prom_setenv(char *name, char *value);
/* The syssgi commands supported thus far. */
#define SGI_SYSID 1 /* Return unique per-machine identifier. */
#define SGI_INVENT 5 /* Fetch inventory */
# define SGI_INV_SIZEOF 1
# define SGI_INV_READ 2
#define SGI_RDNAME 6 /* Return string name of a process. */
#define SGI_SETNVRAM 8 /* Set PROM variable. */
#define SGI_GETNVRAM 9 /* Get PROM variable. */
#define SGI_SETPGID 21 /* Set process group id. */
#define SGI_SYSCONF 22 /* POSIX sysconf garbage. */
#define SGI_PATHCONF 24 /* POSIX sysconf garbage. */
#define SGI_SETGROUPS 40 /* POSIX sysconf garbage. */
#define SGI_GETGROUPS 41 /* POSIX sysconf garbage. */
#define SGI_RUSAGE 56 /* BSD style rusage(). */
#define SGI_SSYNC 62 /* Synchronous fs sync. */
#define SGI_GETSID 65 /* SysVr4 get session id. */
#define SGI_ELFMAP 68 /* Map an elf image. */
#define SGI_TOSSTSAVE 108 /* Toss saved vma's. */
#define SGI_FP_BCOPY 129 /* Should FPU bcopy be used on this machine? */
#define SGI_PHYSP 1011 /* Translate virtual into physical page. */
asmlinkage int irix_syssgi(struct pt_regs *regs)
{
unsigned long cmd;
int retval, base = 0;
if (regs->regs[2] == 1000)
base = 1;
cmd = regs->regs[base + 4];
switch(cmd) {
case SGI_SYSID: {
char __user *buf = (char __user *) regs->regs[base + 5];
/* XXX Use ethernet addr.... */
retval = clear_user(buf, 64) ? -EFAULT : 0;
break;
}
#if 0
case SGI_RDNAME: {
int pid = (int) regs->regs[base + 5];
char __user *buf = (char __user *) regs->regs[base + 6];
struct task_struct *p;
char tcomm[sizeof(current->comm)];
read_lock(&tasklist_lock);
p = find_task_by_pid(pid);
if (!p) {
read_unlock(&tasklist_lock);
retval = -ESRCH;
break;
}
get_task_comm(tcomm, p);
read_unlock(&tasklist_lock);
/* XXX Need to check sizes. */
retval = copy_to_user(buf, tcomm, sizeof(tcomm)) ? -EFAULT : 0;
break;
}
case SGI_GETNVRAM: {
char __user *name = (char __user *) regs->regs[base+5];
char __user *buf = (char __user *) regs->regs[base+6];
char *value;
return -EINVAL; /* til I fix it */
value = prom_getenv(name); /* PROM lock? */
if (!value) {
retval = -EINVAL;
break;
}
/* Do I strlen() for the length? */
retval = copy_to_user(buf, value, 128) ? -EFAULT : 0;
break;
}
case SGI_SETNVRAM: {
char __user *name = (char __user *) regs->regs[base+5];
char __user *value = (char __user *) regs->regs[base+6];
return -EINVAL; /* til I fix it */
retval = prom_setenv(name, value);
/* XXX make sure retval conforms to syssgi(2) */
printk("[%s:%d] setnvram(\"%s\", \"%s\"): retval %d",
current->comm, current->pid, name, value, retval);
/* if (retval == PROM_ENOENT)
retval = -ENOENT; */
break;
}
#endif
case SGI_SETPGID: {
#ifdef DEBUG_PROCGRPS
printk("[%s:%d] setpgid(%d, %d) ",
current->comm, current->pid,
(int) regs->regs[base + 5], (int)regs->regs[base + 6]);
#endif
retval = sys_setpgid(regs->regs[base + 5], regs->regs[base + 6]);
#ifdef DEBUG_PROCGRPS
printk("retval=%d\n", retval);
#endif
}
case SGI_SYSCONF: {
switch(regs->regs[base + 5]) {
case 1:
retval = (MAX_ARG_PAGES >> 4); /* XXX estimate... */
goto out;
case 2:
retval = max_threads;
goto out;
case 3:
retval = HZ;
goto out;
case 4:
retval = NGROUPS_MAX;
goto out;
case 5:
retval = NR_OPEN;
goto out;
case 6:
retval = 1;
goto out;
case 7:
retval = 1;
goto out;
case 8:
retval = 199009;
goto out;
case 11:
retval = PAGE_SIZE;
goto out;
case 12:
retval = 4;
goto out;
case 25:
case 26:
case 27:
case 28:
case 29:
case 30:
retval = 0;
goto out;
case 31:
retval = 32;
goto out;
default:
retval = -EINVAL;
goto out;
};
}
case SGI_SETGROUPS:
retval = sys_setgroups((int) regs->regs[base + 5],
(gid_t __user *) regs->regs[base + 6]);
break;
case SGI_GETGROUPS:
retval = sys_getgroups((int) regs->regs[base + 5],
(gid_t __user *) regs->regs[base + 6]);
break;
case SGI_RUSAGE: {
struct rusage __user *ru = (struct rusage __user *) regs->regs[base + 6];
switch((int) regs->regs[base + 5]) {
case 0:
/* rusage self */
retval = getrusage(current, RUSAGE_SELF, ru);
goto out;
case -1:
/* rusage children */
retval = getrusage(current, RUSAGE_CHILDREN, ru);
goto out;
default:
retval = -EINVAL;
goto out;
};
}
case SGI_SSYNC:
sys_sync();
retval = 0;
break;
case SGI_GETSID:
#ifdef DEBUG_PROCGRPS
printk("[%s:%d] getsid(%d) ", current->comm, current->pid,
(int) regs->regs[base + 5]);
#endif
retval = sys_getsid(regs->regs[base + 5]);
#ifdef DEBUG_PROCGRPS
printk("retval=%d\n", retval);
#endif
break;
case SGI_ELFMAP:
retval = irix_mapelf((int) regs->regs[base + 5],
(struct elf_phdr __user *) regs->regs[base + 6],
(int) regs->regs[base + 7]);
break;
case SGI_TOSSTSAVE:
/* XXX We don't need to do anything? */
retval = 0;
break;
case SGI_FP_BCOPY:
retval = 0;
break;
case SGI_PHYSP: {
unsigned long addr = regs->regs[base + 5];
int __user *pageno = (int __user *) (regs->regs[base + 6]);
struct mm_struct *mm = current->mm;
pgd_t *pgdp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
down_read(&mm->mmap_sem);
pgdp = pgd_offset(mm, addr);
pudp = pud_offset(pgdp, addr);
pmdp = pmd_offset(pudp, addr);
ptep = pte_offset(pmdp, addr);
retval = -EINVAL;
if (ptep) {
pte_t pte = *ptep;
if (pte_val(pte) & (_PAGE_VALID | _PAGE_PRESENT)) {
/* b0rked on 64-bit */
retval = put_user((pte_val(pte) & PAGE_MASK) >>
PAGE_SHIFT, pageno);
}
}
up_read(&mm->mmap_sem);
break;
}
case SGI_INVENT: {
int arg1 = (int) regs->regs [base + 5];
void __user *buffer = (void __user *) regs->regs [base + 6];
int count = (int) regs->regs [base + 7];
switch (arg1) {
case SGI_INV_SIZEOF:
retval = sizeof (inventory_t);
break;
case SGI_INV_READ:
retval = dump_inventory_to_user (buffer, count);
break;
default:
retval = -EINVAL;
}
break;
}
default:
printk("irix_syssgi: Unsupported command %d\n", (int)cmd);
retval = -EINVAL;
break;
};
out:
return retval;
}
asmlinkage int irix_gtime(struct pt_regs *regs)
{
return get_seconds();
}
/*
* IRIX is completely broken... it returns 0 on success, otherwise
* ENOMEM.
*/
asmlinkage int irix_brk(unsigned long brk)
{
unsigned long rlim;
unsigned long newbrk, oldbrk;
struct mm_struct *mm = current->mm;
int ret;
down_write(&mm->mmap_sem);
if (brk < mm->end_code) {
ret = -ENOMEM;
goto out;
}
newbrk = PAGE_ALIGN(brk);
oldbrk = PAGE_ALIGN(mm->brk);
if (oldbrk == newbrk) {
mm->brk = brk;
ret = 0;
goto out;
}
/*
* Always allow shrinking brk
*/
if (brk <= mm->brk) {
mm->brk = brk;
do_munmap(mm, newbrk, oldbrk-newbrk);
ret = 0;
goto out;
}
/*
* Check against rlimit and stack..
*/
rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
if (rlim >= RLIM_INFINITY)
rlim = ~0;
if (brk - mm->end_code > rlim) {
ret = -ENOMEM;
goto out;
}
/*
* Check against existing mmap mappings.
*/
if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE)) {
ret = -ENOMEM;
goto out;
}
/*
* Ok, looks good - let it rip.
*/
if (do_brk(oldbrk, newbrk-oldbrk) != oldbrk) {
ret = -ENOMEM;
goto out;
}
mm->brk = brk;
ret = 0;
out:
up_write(&mm->mmap_sem);
return ret;
}
asmlinkage int irix_getpid(struct pt_regs *regs)
{
regs->regs[3] = current->real_parent->pid;
return current->pid;
}
asmlinkage int irix_getuid(struct pt_regs *regs)
{
regs->regs[3] = current->euid;
return current->uid;
}
asmlinkage int irix_getgid(struct pt_regs *regs)
{
regs->regs[3] = current->egid;
return current->gid;
}
asmlinkage int irix_stime(int value)
{
int err;
struct timespec tv;
tv.tv_sec = value;
tv.tv_nsec = 0;
err = security_settime(&tv, NULL);
if (err)
return err;
write_seqlock_irq(&xtime_lock);
xtime.tv_sec = value;
xtime.tv_nsec = 0;
ntp_clear();
write_sequnlock_irq(&xtime_lock);
return 0;
}
static inline void jiffiestotv(unsigned long jiffies, struct timeval *value)
{
value->tv_usec = (jiffies % HZ) * (1000000 / HZ);
value->tv_sec = jiffies / HZ;
}
static inline void getitimer_real(struct itimerval *value)
{
register unsigned long val, interval;
interval = current->it_real_incr;
val = 0;
if (del_timer(&current->real_timer)) {
unsigned long now = jiffies;
val = current->real_timer.expires;
add_timer(&current->real_timer);
/* look out for negative/zero itimer.. */
if (val <= now)
val = now+1;
val -= now;
}
jiffiestotv(val, &value->it_value);
jiffiestotv(interval, &value->it_interval);
}
asmlinkage unsigned int irix_alarm(unsigned int seconds)
{
return alarm_setitimer(seconds);
}
asmlinkage int irix_pause(void)
{
current->state = TASK_INTERRUPTIBLE;
schedule();
return -EINTR;
}
/* XXX need more than this... */
asmlinkage int irix_mount(char __user *dev_name, char __user *dir_name,
unsigned long flags, char __user *type, void __user *data, int datalen)
{
printk("[%s:%d] irix_mount(%p,%p,%08lx,%p,%p,%d)\n",
current->comm, current->pid,
dev_name, dir_name, flags, type, data, datalen);
return sys_mount(dev_name, dir_name, type, flags, data);
}
struct irix_statfs {
short f_type;
long f_bsize, f_frsize, f_blocks, f_bfree, f_files, f_ffree;
char f_fname[6], f_fpack[6];
};
asmlinkage int irix_statfs(const char __user *path,
struct irix_statfs __user *buf, int len, int fs_type)
{
struct nameidata nd;
struct kstatfs kbuf;
int error, i;
/* We don't support this feature yet. */
if (fs_type) {
error = -EINVAL;
goto out;
}
if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
error = -EFAULT;
goto out;
}
error = user_path_walk(path, &nd);
if (error)
goto out;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
if (error)
goto dput_and_out;
error = __put_user(kbuf.f_type, &buf->f_type);
error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
error |= __put_user(kbuf.f_files, &buf->f_files);
error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
for (i = 0; i < 6; i++) {
error |= __put_user(0, &buf->f_fname[i]);
error |= __put_user(0, &buf->f_fpack[i]);
}
dput_and_out:
path_release(&nd);
out:
return error;
}
asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs __user *buf)
{
struct kstatfs kbuf;
struct file *file;
int error, i;
if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
error = -EFAULT;
goto out;
}
if (!(file = fget(fd))) {
error = -EBADF;
goto out;
}
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
if (error)
goto out_f;
error = __put_user(kbuf.f_type, &buf->f_type);
error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
error |= __put_user(kbuf.f_files, &buf->f_files);
error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
for (i = 0; i < 6; i++) {
error |= __put_user(0, &buf->f_fname[i]);
error |= __put_user(0, &buf->f_fpack[i]);
}
out_f:
fput(file);
out:
return error;
}
asmlinkage int irix_setpgrp(int flags)
{
int error;
#ifdef DEBUG_PROCGRPS
printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
#endif
if(!flags)
error = process_group(current);
else
error = sys_setsid();
#ifdef DEBUG_PROCGRPS
printk("returning %d\n", process_group(current));
#endif
return error;
}
asmlinkage int irix_times(struct tms __user *tbuf)
{
int err = 0;
if (tbuf) {
if (!access_ok(VERIFY_WRITE,tbuf,sizeof *tbuf))
return -EFAULT;
err = __put_user(current->utime, &tbuf->tms_utime);
err |= __put_user(current->stime, &tbuf->tms_stime);
err |= __put_user(current->signal->cutime, &tbuf->tms_cutime);
err |= __put_user(current->signal->cstime, &tbuf->tms_cstime);
}
return err;
}
asmlinkage int irix_exec(struct pt_regs *regs)
{
int error, base = 0;
char *filename;
if(regs->regs[2] == 1000)
base = 1;
filename = getname((char __user *) (long)regs->regs[base + 4]);
error = PTR_ERR(filename);
if (IS_ERR(filename))
return error;
error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
NULL, regs);
putname(filename);
return error;
}
asmlinkage int irix_exece(struct pt_regs *regs)
{
int error, base = 0;
char *filename;
if (regs->regs[2] == 1000)
base = 1;
filename = getname((char __user *) (long)regs->regs[base + 4]);
error = PTR_ERR(filename);
if (IS_ERR(filename))
return error;
error = do_execve(filename, (char __user * __user *) (long)regs->regs[base + 5],
(char __user * __user *) (long)regs->regs[base + 6], regs);
putname(filename);
return error;
}
asmlinkage unsigned long irix_gethostid(void)
{
printk("[%s:%d]: irix_gethostid() called...\n",
current->comm, current->pid);
return -EINVAL;
}
asmlinkage unsigned long irix_sethostid(unsigned long val)
{
printk("[%s:%d]: irix_sethostid(%08lx) called...\n",
current->comm, current->pid, val);
return -EINVAL;
}
asmlinkage int irix_socket(int family, int type, int protocol)
{
switch(type) {
case 1:
type = SOCK_DGRAM;
break;
case 2:
type = SOCK_STREAM;
break;
case 3:
type = 9; /* Invalid... */
break;
case 4:
type = SOCK_RAW;
break;
case 5:
type = SOCK_RDM;
break;
case 6:
type = SOCK_SEQPACKET;
break;
default:
break;
}
return sys_socket(family, type, protocol);
}
asmlinkage int irix_getdomainname(char __user *name, int len)
{
int err;
down_read(&uts_sem);
if (len > __NEW_UTS_LEN)
len = __NEW_UTS_LEN;
err = copy_to_user(name, system_utsname.domainname, len) ? -EFAULT : 0;
up_read(&uts_sem);
return err;
}
asmlinkage unsigned long irix_getpagesize(void)
{
return PAGE_SIZE;
}
asmlinkage int irix_msgsys(int opcode, unsigned long arg0, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
unsigned long arg4)
{
switch (opcode) {
case 0:
return sys_msgget((key_t) arg0, (int) arg1);
case 1:
return sys_msgctl((int) arg0, (int) arg1,
(struct msqid_ds __user *)arg2);
case 2:
return sys_msgrcv((int) arg0, (struct msgbuf __user *) arg1,
(size_t) arg2, (long) arg3, (int) arg4);
case 3:
return sys_msgsnd((int) arg0, (struct msgbuf __user *) arg1,
(size_t) arg2, (int) arg3);
default:
return -EINVAL;
}
}
asmlinkage int irix_shmsys(int opcode, unsigned long arg0, unsigned long arg1,
unsigned long arg2, unsigned long arg3)
{
switch (opcode) {
case 0:
return do_shmat((int) arg0, (char __user *) arg1, (int) arg2,
(unsigned long *) arg3);
case 1:
return sys_shmctl((int)arg0, (int)arg1,
(struct shmid_ds __user *)arg2);
case 2:
return sys_shmdt((char __user *)arg0);
case 3:
return sys_shmget((key_t) arg0, (int) arg1, (int) arg2);
default:
return -EINVAL;
}
}
asmlinkage int irix_semsys(int opcode, unsigned long arg0, unsigned long arg1,
unsigned long arg2, int arg3)
{
switch (opcode) {
case 0:
return sys_semctl((int) arg0, (int) arg1, (int) arg2,
(union semun) arg3);
case 1:
return sys_semget((key_t) arg0, (int) arg1, (int) arg2);
case 2:
return sys_semop((int) arg0, (struct sembuf __user *)arg1,
(unsigned int) arg2);
default:
return -EINVAL;
}
}
static inline loff_t llseek(struct file *file, loff_t offset, int origin)
{
loff_t (*fn)(struct file *, loff_t, int);
loff_t retval;
fn = default_llseek;
if (file->f_op && file->f_op->llseek)
fn = file->f_op->llseek;
lock_kernel();
retval = fn(file, offset, origin);
unlock_kernel();
return retval;
}
asmlinkage int irix_lseek64(int fd, int _unused, int offhi, int offlow,
int origin)
{
struct file * file;
loff_t offset;
int retval;
retval = -EBADF;
file = fget(fd);
if (!file)
goto bad;
retval = -EINVAL;
if (origin > 2)
goto out_putf;
offset = llseek(file, ((loff_t) offhi << 32) | offlow, origin);
retval = (int) offset;
out_putf:
fput(file);
bad:
return retval;
}
asmlinkage int irix_sginap(int ticks)
{
schedule_timeout_interruptible(ticks);
return 0;
}
asmlinkage int irix_sgikopt(char __user *istring, char __user *ostring, int len)
{
return -EINVAL;
}
asmlinkage int irix_gettimeofday(struct timeval __user *tv)
{
time_t sec;
long nsec, seq;
int err;
if (!access_ok(VERIFY_WRITE, tv, sizeof(struct timeval)))
return -EFAULT;
do {
seq = read_seqbegin(&xtime_lock);
sec = xtime.tv_sec;
nsec = xtime.tv_nsec;
} while (read_seqretry(&xtime_lock, seq));
err = __put_user(sec, &tv->tv_sec);
err |= __put_user((nsec / 1000), &tv->tv_usec);
return err;
}
#define IRIX_MAP_AUTOGROW 0x40
asmlinkage unsigned long irix_mmap32(unsigned long addr, size_t len, int prot,
int flags, int fd, off_t offset)
{
struct file *file = NULL;
unsigned long retval;
if (!(flags & MAP_ANONYMOUS)) {
if (!(file = fget(fd)))
return -EBADF;
/* Ok, bad taste hack follows, try to think in something else
* when reading this. */
if (flags & IRIX_MAP_AUTOGROW) {
unsigned long old_pos;
long max_size = offset + len;
if (max_size > file->f_dentry->d_inode->i_size) {
old_pos = sys_lseek (fd, max_size - 1, 0);
sys_write (fd, (void __user *) "", 1);
sys_lseek (fd, old_pos, 0);
}
}
}
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
down_write(&current->mm->mmap_sem);
retval = do_mmap(file, addr, len, prot, flags, offset);
up_write(&current->mm->mmap_sem);
if (file)
fput(file);
return retval;
}
asmlinkage int irix_madvise(unsigned long addr, int len, int behavior)
{
printk("[%s:%d] Wheee.. irix_madvise(%08lx,%d,%d)\n",
current->comm, current->pid, addr, len, behavior);
return -EINVAL;
}
asmlinkage int irix_pagelock(char __user *addr, int len, int op)
{
printk("[%s:%d] Wheee.. irix_pagelock(%p,%d,%d)\n",
current->comm, current->pid, addr, len, op);
return -EINVAL;
}
asmlinkage int irix_quotactl(struct pt_regs *regs)
{
printk("[%s:%d] Wheee.. irix_quotactl()\n",
current->comm, current->pid);
return -EINVAL;
}
asmlinkage int irix_BSDsetpgrp(int pid, int pgrp)
{
int error;
#ifdef DEBUG_PROCGRPS
printk("[%s:%d] BSDsetpgrp(%d, %d) ", current->comm, current->pid,
pid, pgrp);
#endif
if(!pid)
pid = current->pid;
/* Wheee, weird sysv thing... */
if ((pgrp == 0) && (pid == current->pid))
error = sys_setsid();
else
error = sys_setpgid(pid, pgrp);
#ifdef DEBUG_PROCGRPS
printk("error = %d\n", error);
#endif
return error;
}
asmlinkage int irix_systeminfo(int cmd, char __user *buf, int cnt)
{
printk("[%s:%d] Wheee.. irix_systeminfo(%d,%p,%d)\n",
current->comm, current->pid, cmd, buf, cnt);
return -EINVAL;
}
struct iuname {
char sysname[257], nodename[257], release[257];
char version[257], machine[257];
char m_type[257], base_rel[257];
char _unused0[257], _unused1[257], _unused2[257];
char _unused3[257], _unused4[257], _unused5[257];
};
asmlinkage int irix_uname(struct iuname __user *buf)
{
down_read(&uts_sem);
if (copy_from_user(system_utsname.sysname, buf->sysname, 65)
|| copy_from_user(system_utsname.nodename, buf->nodename, 65)
|| copy_from_user(system_utsname.release, buf->release, 65)
|| copy_from_user(system_utsname.version, buf->version, 65)
|| copy_from_user(system_utsname.machine, buf->machine, 65)) {
return -EFAULT;
}
up_read(&uts_sem);
return 1;
}
#undef DEBUG_XSTAT
static int irix_xstat32_xlate(struct kstat *stat, void __user *ubuf)
{
struct xstat32 {
u32 st_dev, st_pad1[3], st_ino, st_mode, st_nlink, st_uid, st_gid;
u32 st_rdev, st_pad2[2], st_size, st_pad3;
u32 st_atime0, st_atime1;
u32 st_mtime0, st_mtime1;
u32 st_ctime0, st_ctime1;
u32 st_blksize, st_blocks;
char st_fstype[16];
u32 st_pad4[8];
} ub;
if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
return -EOVERFLOW;
ub.st_dev = sysv_encode_dev(stat->dev);
ub.st_ino = stat->ino;
ub.st_mode = stat->mode;
ub.st_nlink = stat->nlink;
SET_UID(ub.st_uid, stat->uid);
SET_GID(ub.st_gid, stat->gid);
ub.st_rdev = sysv_encode_dev(stat->rdev);
#if BITS_PER_LONG == 32
if (stat->size > MAX_NON_LFS)
return -EOVERFLOW;
#endif
ub.st_size = stat->size;
ub.st_atime0 = stat->atime.tv_sec;
ub.st_atime1 = stat->atime.tv_nsec;
ub.st_mtime0 = stat->mtime.tv_sec;
ub.st_mtime1 = stat->atime.tv_nsec;
ub.st_ctime0 = stat->ctime.tv_sec;
ub.st_ctime1 = stat->atime.tv_nsec;
ub.st_blksize = stat->blksize;
ub.st_blocks = stat->blocks;
strcpy (ub.st_fstype, "efs");
return copy_to_user(ubuf, &ub, sizeof(ub)) ? -EFAULT : 0;
}
static int irix_xstat64_xlate(struct kstat *stat, void __user *ubuf)
{
struct xstat64 {
u32 st_dev; s32 st_pad1[3];
unsigned long long st_ino;
u32 st_mode;
u32 st_nlink; s32 st_uid; s32 st_gid; u32 st_rdev;
s32 st_pad2[2];
long long st_size;
s32 st_pad3;
struct { s32 tv_sec, tv_nsec; } st_atime, st_mtime, st_ctime;
s32 st_blksize;
long long st_blocks;
char st_fstype[16];
s32 st_pad4[8];
} ks;
if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
return -EOVERFLOW;
ks.st_dev = sysv_encode_dev(stat->dev);
ks.st_pad1[0] = ks.st_pad1[1] = ks.st_pad1[2] = 0;
ks.st_ino = (unsigned long long) stat->ino;
ks.st_mode = (u32) stat->mode;
ks.st_nlink = (u32) stat->nlink;
ks.st_uid = (s32) stat->uid;
ks.st_gid = (s32) stat->gid;
ks.st_rdev = sysv_encode_dev (stat->rdev);
ks.st_pad2[0] = ks.st_pad2[1] = 0;
ks.st_size = (long long) stat->size;
ks.st_pad3 = 0;
/* XXX hackety hack... */
ks.st_atime.tv_sec = (s32) stat->atime.tv_sec;
ks.st_atime.tv_nsec = stat->atime.tv_nsec;
ks.st_mtime.tv_sec = (s32) stat->mtime.tv_sec;
ks.st_mtime.tv_nsec = stat->mtime.tv_nsec;
ks.st_ctime.tv_sec = (s32) stat->ctime.tv_sec;
ks.st_ctime.tv_nsec = stat->ctime.tv_nsec;
ks.st_blksize = (s32) stat->blksize;
ks.st_blocks = (long long) stat->blocks;
memset(ks.st_fstype, 0, 16);
ks.st_pad4[0] = ks.st_pad4[1] = ks.st_pad4[2] = ks.st_pad4[3] = 0;
ks.st_pad4[4] = ks.st_pad4[5] = ks.st_pad4[6] = ks.st_pad4[7] = 0;
/* Now write it all back. */
return copy_to_user(ubuf, &ks, sizeof(ks)) ? -EFAULT : 0;
}
asmlinkage int irix_xstat(int version, char __user *filename, struct stat __user *statbuf)
{
int retval;
struct kstat stat;
#ifdef DEBUG_XSTAT
printk("[%s:%d] Wheee.. irix_xstat(%d,%s,%p) ",
current->comm, current->pid, version, filename, statbuf);
#endif
retval = vfs_stat(filename, &stat);
if (!retval) {
switch(version) {
case 2:
retval = irix_xstat32_xlate(&stat, statbuf);
break;
case 3:
retval = irix_xstat64_xlate(&stat, statbuf);
break;
default:
retval = -EINVAL;
}
}
return retval;
}
asmlinkage int irix_lxstat(int version, char __user *filename, struct stat __user *statbuf)
{
int error;
struct kstat stat;
#ifdef DEBUG_XSTAT
printk("[%s:%d] Wheee.. irix_lxstat(%d,%s,%p) ",
current->comm, current->pid, version, filename, statbuf);
#endif
error = vfs_lstat(filename, &stat);
if (!error) {
switch (version) {
case 2:
error = irix_xstat32_xlate(&stat, statbuf);
break;
case 3:
error = irix_xstat64_xlate(&stat, statbuf);
break;
default:
error = -EINVAL;
}
}
return error;
}
asmlinkage int irix_fxstat(int version, int fd, struct stat __user *statbuf)
{
int error;
struct kstat stat;
#ifdef DEBUG_XSTAT
printk("[%s:%d] Wheee.. irix_fxstat(%d,%d,%p) ",
current->comm, current->pid, version, fd, statbuf);
#endif
error = vfs_fstat(fd, &stat);
if (!error) {
switch (version) {
case 2:
error = irix_xstat32_xlate(&stat, statbuf);
break;
case 3:
error = irix_xstat64_xlate(&stat, statbuf);
break;
default:
error = -EINVAL;
}
}
return error;
}
asmlinkage int irix_xmknod(int ver, char __user *filename, int mode, unsigned dev)
{
int retval;
printk("[%s:%d] Wheee.. irix_xmknod(%d,%s,%x,%x)\n",
current->comm, current->pid, ver, filename, mode, dev);
switch(ver) {
case 2:
/* shouldn't we convert here as well as on stat()? */
retval = sys_mknod(filename, mode, dev);
break;
default:
retval = -EINVAL;
break;
};
return retval;
}
asmlinkage int irix_swapctl(int cmd, char __user *arg)
{
printk("[%s:%d] Wheee.. irix_swapctl(%d,%p)\n",
current->comm, current->pid, cmd, arg);
return -EINVAL;
}
struct irix_statvfs {
u32 f_bsize; u32 f_frsize; u32 f_blocks;
u32 f_bfree; u32 f_bavail; u32 f_files; u32 f_ffree; u32 f_favail;
u32 f_fsid; char f_basetype[16];
u32 f_flag; u32 f_namemax;
char f_fstr[32]; u32 f_filler[16];
};
asmlinkage int irix_statvfs(char __user *fname, struct irix_statvfs __user *buf)
{
struct nameidata nd;
struct kstatfs kbuf;
int error, i;
printk("[%s:%d] Wheee.. irix_statvfs(%s,%p)\n",
current->comm, current->pid, fname, buf);
if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
return -EFAULT;
error = user_path_walk(fname, &nd);
if (error)
goto out;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
if (error)
goto dput_and_out;
error |= __put_user(kbuf.f_bsize, &buf->f_bsize);
error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
error |= __put_user(kbuf.f_files, &buf->f_files);
error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
#ifdef __MIPSEB__
error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
#else
error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
#endif
for (i = 0; i < 16; i++)
error |= __put_user(0, &buf->f_basetype[i]);
error |= __put_user(0, &buf->f_flag);
error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
for (i = 0; i < 32; i++)
error |= __put_user(0, &buf->f_fstr[i]);
dput_and_out:
path_release(&nd);
out:
return error;
}
asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs __user *buf)
{
struct kstatfs kbuf;
struct file *file;
int error, i;
printk("[%s:%d] Wheee.. irix_fstatvfs(%d,%p)\n",
current->comm, current->pid, fd, buf);
if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs)))
return -EFAULT;
if (!(file = fget(fd))) {
error = -EBADF;
goto out;
}
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
if (error)
goto out_f;
error = __put_user(kbuf.f_bsize, &buf->f_bsize);
error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
error |= __put_user(kbuf.f_files, &buf->f_files);
error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
#ifdef __MIPSEB__
error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
#else
error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
#endif
for(i = 0; i < 16; i++)
error |= __put_user(0, &buf->f_basetype[i]);
error |= __put_user(0, &buf->f_flag);
error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
error |= __clear_user(&buf->f_fstr, sizeof(buf->f_fstr)) ? -EFAULT : 0;
out_f:
fput(file);
out:
return error;
}
asmlinkage int irix_priocntl(struct pt_regs *regs)
{
printk("[%s:%d] Wheee.. irix_priocntl()\n",
current->comm, current->pid);
return -EINVAL;
}
asmlinkage int irix_sigqueue(int pid, int sig, int code, int val)
{
printk("[%s:%d] Wheee.. irix_sigqueue(%d,%d,%d,%d)\n",
current->comm, current->pid, pid, sig, code, val);
return -EINVAL;
}
asmlinkage int irix_truncate64(char __user *name, int pad, int size1, int size2)
{
int retval;
if (size1) {
retval = -EINVAL;
goto out;
}
retval = sys_truncate(name, size2);
out:
return retval;
}
asmlinkage int irix_ftruncate64(int fd, int pad, int size1, int size2)
{
int retval;
if (size1) {
retval = -EINVAL;
goto out;
}
retval = sys_ftruncate(fd, size2);
out:
return retval;
}
asmlinkage int irix_mmap64(struct pt_regs *regs)
{
int len, prot, flags, fd, off1, off2, error, base = 0;
unsigned long addr, pgoff, *sp;
struct file *file = NULL;
int err;
if (regs->regs[2] == 1000)
base = 1;
sp = (unsigned long *) (regs->regs[29] + 16);
addr = regs->regs[base + 4];
len = regs->regs[base + 5];
prot = regs->regs[base + 6];
if (!base) {
flags = regs->regs[base + 7];
if (!access_ok(VERIFY_READ, sp, (4 * sizeof(unsigned long))))
return -EFAULT;
fd = sp[0];
err = __get_user(off1, &sp[1]);
err |= __get_user(off2, &sp[2]);
} else {
if (!access_ok(VERIFY_READ, sp, (5 * sizeof(unsigned long))))
return -EFAULT;
err = __get_user(flags, &sp[0]);
err |= __get_user(fd, &sp[1]);
err |= __get_user(off1, &sp[2]);
err |= __get_user(off2, &sp[3]);
}
if (err)
return err;
if (off1 & PAGE_MASK)
return -EOVERFLOW;
pgoff = (off1 << (32 - PAGE_SHIFT)) | (off2 >> PAGE_SHIFT);
if (!(flags & MAP_ANONYMOUS)) {
if (!(file = fget(fd)))
return -EBADF;
/* Ok, bad taste hack follows, try to think in something else
when reading this */
if (flags & IRIX_MAP_AUTOGROW) {
unsigned long old_pos;
long max_size = off2 + len;
if (max_size > file->f_dentry->d_inode->i_size) {
old_pos = sys_lseek (fd, max_size - 1, 0);
sys_write (fd, (void __user *) "", 1);
sys_lseek (fd, old_pos, 0);
}
}
}
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
down_write(&current->mm->mmap_sem);
error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
up_write(&current->mm->mmap_sem);
if (file)
fput(file);
return error;
}
asmlinkage int irix_dmi(struct pt_regs *regs)
{
printk("[%s:%d] Wheee.. irix_dmi()\n",
current->comm, current->pid);
return -EINVAL;
}
asmlinkage int irix_pread(int fd, char __user *buf, int cnt, int off64,
int off1, int off2)
{
printk("[%s:%d] Wheee.. irix_pread(%d,%p,%d,%d,%d,%d)\n",
current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
return -EINVAL;
}
asmlinkage int irix_pwrite(int fd, char __user *buf, int cnt, int off64,
int off1, int off2)
{
printk("[%s:%d] Wheee.. irix_pwrite(%d,%p,%d,%d,%d,%d)\n",
current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
return -EINVAL;
}
asmlinkage int irix_sgifastpath(int cmd, unsigned long arg0, unsigned long arg1,
unsigned long arg2, unsigned long arg3,
unsigned long arg4, unsigned long arg5)
{
printk("[%s:%d] Wheee.. irix_fastpath(%d,%08lx,%08lx,%08lx,%08lx,"
"%08lx,%08lx)\n",
current->comm, current->pid, cmd, arg0, arg1, arg2,
arg3, arg4, arg5);
return -EINVAL;
}
struct irix_statvfs64 {
u32 f_bsize; u32 f_frsize;
u64 f_blocks; u64 f_bfree; u64 f_bavail;
u64 f_files; u64 f_ffree; u64 f_favail;
u32 f_fsid;
char f_basetype[16];
u32 f_flag; u32 f_namemax;
char f_fstr[32];
u32 f_filler[16];
};
asmlinkage int irix_statvfs64(char __user *fname, struct irix_statvfs64 __user *buf)
{
struct nameidata nd;
struct kstatfs kbuf;
int error, i;
printk("[%s:%d] Wheee.. irix_statvfs64(%s,%p)\n",
current->comm, current->pid, fname, buf);
if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs64))) {
error = -EFAULT;
goto out;
}
error = user_path_walk(fname, &nd);
if (error)
goto out;
error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
if (error)
goto dput_and_out;
error = __put_user(kbuf.f_bsize, &buf->f_bsize);
error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
error |= __put_user(kbuf.f_files, &buf->f_files);
error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
#ifdef __MIPSEB__
error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
#else
error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
#endif
for(i = 0; i < 16; i++)
error |= __put_user(0, &buf->f_basetype[i]);
error |= __put_user(0, &buf->f_flag);
error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
for(i = 0; i < 32; i++)
error |= __put_user(0, &buf->f_fstr[i]);
dput_and_out:
path_release(&nd);
out:
return error;
}
asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs __user *buf)
{
struct kstatfs kbuf;
struct file *file;
int error, i;
printk("[%s:%d] Wheee.. irix_fstatvfs64(%d,%p)\n",
current->comm, current->pid, fd, buf);
if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
error = -EFAULT;
goto out;
}
if (!(file = fget(fd))) {
error = -EBADF;
goto out;
}
error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
if (error)
goto out_f;
error = __put_user(kbuf.f_bsize, &buf->f_bsize);
error |= __put_user(kbuf.f_frsize, &buf->f_frsize);
error |= __put_user(kbuf.f_blocks, &buf->f_blocks);
error |= __put_user(kbuf.f_bfree, &buf->f_bfree);
error |= __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
error |= __put_user(kbuf.f_files, &buf->f_files);
error |= __put_user(kbuf.f_ffree, &buf->f_ffree);
error |= __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
#ifdef __MIPSEB__
error |= __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
#else
error |= __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
#endif
for(i = 0; i < 16; i++)
error |= __put_user(0, &buf->f_basetype[i]);
error |= __put_user(0, &buf->f_flag);
error |= __put_user(kbuf.f_namelen, &buf->f_namemax);
error |= __clear_user(buf->f_fstr, sizeof(buf->f_fstr[i])) ? -EFAULT : 0;
out_f:
fput(file);
out:
return error;
}
asmlinkage int irix_getmountid(char __user *fname, unsigned long __user *midbuf)
{
int err;
printk("[%s:%d] irix_getmountid(%s, %p)\n",
current->comm, current->pid, fname, midbuf);
if (!access_ok(VERIFY_WRITE, midbuf, (sizeof(unsigned long) * 4)))
return -EFAULT;
/*
* The idea with this system call is that when trying to determine
* 'pwd' and it's a toss-up for some reason, userland can use the
* fsid of the filesystem to try and make the right decision, but
* we don't have this so for now. XXX
*/
err = __put_user(0, &midbuf[0]);
err |= __put_user(0, &midbuf[1]);
err |= __put_user(0, &midbuf[2]);
err |= __put_user(0, &midbuf[3]);
return err;
}
asmlinkage int irix_nsproc(unsigned long entry, unsigned long mask,
unsigned long arg, unsigned long sp, int slen)
{
printk("[%s:%d] Wheee.. irix_nsproc(%08lx,%08lx,%08lx,%08lx,%d)\n",
current->comm, current->pid, entry, mask, arg, sp, slen);
return -EINVAL;
}
#undef DEBUG_GETDENTS
struct irix_dirent32 {
u32 d_ino;
u32 d_off;
unsigned short d_reclen;
char d_name[1];
};
struct irix_dirent32_callback {
struct irix_dirent32 __user *current_dir;
struct irix_dirent32 __user *previous;
int count;
int error;
};
#define NAME_OFFSET32(de) ((int) ((de)->d_name - (char *) (de)))
#define ROUND_UP32(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
static int irix_filldir32(void *__buf, const char *name,
int namlen, loff_t offset, ino_t ino, unsigned int d_type)
{
struct irix_dirent32 __user *dirent;
struct irix_dirent32_callback *buf = __buf;
unsigned short reclen = ROUND_UP32(NAME_OFFSET32(dirent) + namlen + 1);
int err = 0;
#ifdef DEBUG_GETDENTS
printk("\nirix_filldir32[reclen<%d>namlen<%d>count<%d>]",
reclen, namlen, buf->count);
#endif
buf->error = -EINVAL; /* only used if we fail.. */
if (reclen > buf->count)
return -EINVAL;
dirent = buf->previous;
if (dirent)
err = __put_user(offset, &dirent->d_off);
dirent = buf->current_dir;
err |= __put_user(dirent, &buf->previous);
err |= __put_user(ino, &dirent->d_ino);
err |= __put_user(reclen, &dirent->d_reclen);
err |= copy_to_user((char __user *)dirent->d_name, name, namlen) ? -EFAULT : 0;
err |= __put_user(0, &dirent->d_name[namlen]);
dirent = (struct irix_dirent32 __user *) ((char __user *) dirent + reclen);
buf->current_dir = dirent;
buf->count -= reclen;
return err;
}
asmlinkage int irix_ngetdents(unsigned int fd, void __user * dirent,
unsigned int count, int __user *eob)
{
struct file *file;
struct irix_dirent32 __user *lastdirent;
struct irix_dirent32_callback buf;
int error;
#ifdef DEBUG_GETDENTS
printk("[%s:%d] ngetdents(%d, %p, %d, %p) ", current->comm,
current->pid, fd, dirent, count, eob);
#endif
error = -EBADF;
file = fget(fd);
if (!file)
goto out;
buf.current_dir = (struct irix_dirent32 __user *) dirent;
buf.previous = NULL;
buf.count = count;
buf.error = 0;
error = vfs_readdir(file, irix_filldir32, &buf);
if (error < 0)
goto out_putf;
error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
put_user(file->f_pos, &lastdirent->d_off);
error = count - buf.count;
}
if (put_user(0, eob) < 0) {
error = -EFAULT;
goto out_putf;
}
#ifdef DEBUG_GETDENTS
printk("eob=%d returning %d\n", *eob, count - buf.count);
#endif
error = count - buf.count;
out_putf:
fput(file);
out:
return error;
}
struct irix_dirent64 {
u64 d_ino;
u64 d_off;
unsigned short d_reclen;
char d_name[1];
};
struct irix_dirent64_callback {
struct irix_dirent64 __user *curr;
struct irix_dirent64 __user *previous;
int count;
int error;
};
#define NAME_OFFSET64(de) ((int) ((de)->d_name - (char *) (de)))
#define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1))
static int irix_filldir64(void *__buf, const char *name,
int namlen, loff_t offset, ino_t ino, unsigned int d_type)
{
struct irix_dirent64 __user *dirent;
struct irix_dirent64_callback * buf = __buf;
unsigned short reclen = ROUND_UP64(NAME_OFFSET64(dirent) + namlen + 1);
int err = 0;
if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
return -EFAULT;
if (__put_user(-EINVAL, &buf->error)) /* only used if we fail.. */
return -EFAULT;
if (reclen > buf->count)
return -EINVAL;
dirent = buf->previous;
if (dirent)
err = __put_user(offset, &dirent->d_off);
dirent = buf->curr;
buf->previous = dirent;
err |= __put_user(ino, &dirent->d_ino);
err |= __put_user(reclen, &dirent->d_reclen);
err |= __copy_to_user((char __user *)dirent->d_name, name, namlen)
? -EFAULT : 0;
err |= __put_user(0, &dirent->d_name[namlen]);
dirent = (struct irix_dirent64 __user *) ((char __user *) dirent + reclen);
buf->curr = dirent;
buf->count -= reclen;
return err;
}
asmlinkage int irix_getdents64(int fd, void __user *dirent, int cnt)
{
struct file *file;
struct irix_dirent64 __user *lastdirent;
struct irix_dirent64_callback buf;
int error;
#ifdef DEBUG_GETDENTS
printk("[%s:%d] getdents64(%d, %p, %d) ", current->comm,
current->pid, fd, dirent, cnt);
#endif
error = -EBADF;
if (!(file = fget(fd)))
goto out;
error = -EFAULT;
if (!access_ok(VERIFY_WRITE, dirent, cnt))
goto out_f;
error = -EINVAL;
if (cnt < (sizeof(struct irix_dirent64) + 255))
goto out_f;
buf.curr = (struct irix_dirent64 __user *) dirent;
buf.previous = NULL;
buf.count = cnt;
buf.error = 0;
error = vfs_readdir(file, irix_filldir64, &buf);
if (error < 0)
goto out_f;
lastdirent = buf.previous;
if (!lastdirent) {
error = buf.error;
goto out_f;
}
if (put_user(file->f_pos, &lastdirent->d_off))
return -EFAULT;
#ifdef DEBUG_GETDENTS
printk("returning %d\n", cnt - buf.count);
#endif
error = cnt - buf.count;
out_f:
fput(file);
out:
return error;
}
asmlinkage int irix_ngetdents64(int fd, void __user *dirent, int cnt, int *eob)
{
struct file *file;
struct irix_dirent64 __user *lastdirent;
struct irix_dirent64_callback buf;
int error;
#ifdef DEBUG_GETDENTS
printk("[%s:%d] ngetdents64(%d, %p, %d) ", current->comm,
current->pid, fd, dirent, cnt);
#endif
error = -EBADF;
if (!(file = fget(fd)))
goto out;
error = -EFAULT;
if (!access_ok(VERIFY_WRITE, dirent, cnt) ||
!access_ok(VERIFY_WRITE, eob, sizeof(*eob)))
goto out_f;
error = -EINVAL;
if (cnt < (sizeof(struct irix_dirent64) + 255))
goto out_f;
*eob = 0;
buf.curr = (struct irix_dirent64 __user *) dirent;
buf.previous = NULL;
buf.count = cnt;
buf.error = 0;
error = vfs_readdir(file, irix_filldir64, &buf);
if (error < 0)
goto out_f;
lastdirent = buf.previous;
if (!lastdirent) {
error = buf.error;
goto out_f;
}
if (put_user(file->f_pos, &lastdirent->d_off))
return -EFAULT;
#ifdef DEBUG_GETDENTS
printk("eob=%d returning %d\n", *eob, cnt - buf.count);
#endif
error = cnt - buf.count;
out_f:
fput(file);
out:
return error;
}
asmlinkage int irix_uadmin(unsigned long op, unsigned long func, unsigned long arg)
{
int retval;
switch (op) {
case 1:
/* Reboot */
printk("[%s:%d] irix_uadmin: Wants to reboot...\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 2:
/* Shutdown */
printk("[%s:%d] irix_uadmin: Wants to shutdown...\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 4:
/* Remount-root */
printk("[%s:%d] irix_uadmin: Wants to remount root...\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 8:
/* Kill all tasks. */
printk("[%s:%d] irix_uadmin: Wants to kill all tasks...\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 256:
/* Set magic mushrooms... */
printk("[%s:%d] irix_uadmin: Wants to set magic mushroom[%d]...\n",
current->comm, current->pid, (int) func);
retval = -EINVAL;
goto out;
default:
printk("[%s:%d] irix_uadmin: Unknown operation [%d]...\n",
current->comm, current->pid, (int) op);
retval = -EINVAL;
goto out;
};
out:
return retval;
}
asmlinkage int irix_utssys(char __user *inbuf, int arg, int type, char __user *outbuf)
{
int retval;
switch(type) {
case 0:
/* uname() */
retval = irix_uname((struct iuname __user *)inbuf);
goto out;
case 2:
/* ustat() */
printk("[%s:%d] irix_utssys: Wants to do ustat()\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 3:
/* fusers() */
printk("[%s:%d] irix_utssys: Wants to do fusers()\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
default:
printk("[%s:%d] irix_utssys: Wants to do unknown type[%d]\n",
current->comm, current->pid, (int) type);
retval = -EINVAL;
goto out;
}
out:
return retval;
}
#undef DEBUG_FCNTL
#define IRIX_F_ALLOCSP 10
asmlinkage int irix_fcntl(int fd, int cmd, int arg)
{
int retval;
#ifdef DEBUG_FCNTL
printk("[%s:%d] irix_fcntl(%d, %d, %d) ", current->comm,
current->pid, fd, cmd, arg);
#endif
if (cmd == IRIX_F_ALLOCSP){
return 0;
}
retval = sys_fcntl(fd, cmd, arg);
#ifdef DEBUG_FCNTL
printk("%d\n", retval);
#endif
return retval;
}
asmlinkage int irix_ulimit(int cmd, int arg)
{
int retval;
switch(cmd) {
case 1:
printk("[%s:%d] irix_ulimit: Wants to get file size limit.\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 2:
printk("[%s:%d] irix_ulimit: Wants to set file size limit.\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 3:
printk("[%s:%d] irix_ulimit: Wants to get brk limit.\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
case 4:
#if 0
printk("[%s:%d] irix_ulimit: Wants to get fd limit.\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
#endif
retval = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
goto out;
case 5:
printk("[%s:%d] irix_ulimit: Wants to get txt offset.\n",
current->comm, current->pid);
retval = -EINVAL;
goto out;
default:
printk("[%s:%d] irix_ulimit: Unknown command [%d].\n",
current->comm, current->pid, cmd);
retval = -EINVAL;
goto out;
}
out:
return retval;
}
asmlinkage int irix_unimp(struct pt_regs *regs)
{
printk("irix_unimp [%s:%d] v0=%d v1=%d a0=%08lx a1=%08lx a2=%08lx "
"a3=%08lx\n", current->comm, current->pid,
(int) regs->regs[2], (int) regs->regs[3],
regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
return -ENOSYS;
}
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