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linux/arch/mips/kernel/sysirix.c
David Howells afefdbb28a [PATCH] VFS: Make filldir_t and struct kstat deal in 64-bit inode numbers 
These patches make the kernel pass 64-bit inode numbers internally when
communicating to userspace, even on a 32-bit system.  They are required
because some filesystems have intrinsic 64-bit inode numbers: NFS3+ and XFS
for example.  The 64-bit inode numbers are then propagated to userspace
automatically where the arch supports it.

Problems have been seen with userspace (eg: ld.so) using the 64-bit inode
number returned by stat64() or getdents64() to differentiate files, and
failing because the 64-bit inode number space was compressed to 32-bits, and
so overlaps occur.

This patch:

Make filldir_t take a 64-bit inode number and struct kstat carry a 64-bit
inode number so that 64-bit inode numbers can be passed back to userspace.

The stat functions then returns the full 64-bit inode number where
available and where possible.  If it is not possible to represent the inode
number supplied by the filesystem in the field provided by userspace, then
error EOVERFLOW will be issued.

Similarly, the getdents/readdir functions now pass the full 64-bit inode
number to userspace where possible, returning EOVERFLOW instead when a
directory entry is encountered that can't be properly represented.

Note that this means that some inodes will not be stat'able on a 32-bit
system with old libraries where they were before - but it does mean that
there will be no ambiguity over what a 32-bit inode number refers to.

Note similarly that directory scans may be cut short with an error on a
32-bit system with old libraries where the scan would work before for the
same reasons.

It is judged unlikely that this situation will occur because modern glibc
uses 64-bit capable versions of stat and getdents class functions
exclusively, and that older systems are unlikely to encounter
unrepresentable inode numbers anyway.

[akpm: alpha build fix]
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03 08:03:40 -07:00

2141 lines
50 KiB
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/*
* 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 <linux/resource.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 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, &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, &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, 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(utsname()->sysname, buf->sysname, 65)
|| copy_from_user(utsname()->nodename, buf->nodename, 65)
|| copy_from_user(utsname()->release, buf->release, 65)
|| copy_from_user(utsname()->version, buf->version, 65)
|| copy_from_user(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, &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, &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, &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, &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, u64 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;
u32 d_ino;
#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;
d_ino = ino;
if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
return -EOVERFLOW;
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(d_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, u64 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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