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author | Al Viro <viro@zeniv.linux.org.uk> | 2008-04-23 18:05:15 (GMT) |
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committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-05-01 17:07:28 (GMT) |
commit | a2dcb44c3c5a8151d2d9f6ac8ad0789efcdbe184 (patch) | |
tree | 8711fc210dc58372a859e6a6cf78dc638d768600 /arch/alpha/kernel | |
parent | bf7da7bcfb38409b4cdea34b0905bdf344f1b36d (diff) | |
download | linux-a2dcb44c3c5a8151d2d9f6ac8ad0789efcdbe184.tar.xz |
[PATCH] make osf_select() use core_sys_select()
... instead of open-coding it
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/alpha/kernel')
-rw-r--r-- | arch/alpha/kernel/osf_sys.c | 69 |
1 files changed, 4 insertions, 65 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index 9fee37e..32ca1b9 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c @@ -981,27 +981,18 @@ asmlinkage int osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, struct timeval32 __user *tvp) { - fd_set_bits fds; - char *bits; - size_t size; - long timeout; - int ret = -EINVAL; - struct fdtable *fdt; - int max_fds; - - timeout = MAX_SCHEDULE_TIMEOUT; + s64 timeout = MAX_SCHEDULE_TIMEOUT; if (tvp) { time_t sec, usec; if (!access_ok(VERIFY_READ, tvp, sizeof(*tvp)) || __get_user(sec, &tvp->tv_sec) || __get_user(usec, &tvp->tv_usec)) { - ret = -EFAULT; - goto out_nofds; + return -EFAULT; } if (sec < 0 || usec < 0) - goto out_nofds; + return -EINVAL; if ((unsigned long) sec < MAX_SELECT_SECONDS) { timeout = (usec + 1000000/HZ - 1) / (1000000/HZ); @@ -1009,60 +1000,8 @@ osf_select(int n, fd_set __user *inp, fd_set __user *outp, fd_set __user *exp, } } - rcu_read_lock(); - fdt = files_fdtable(current->files); - max_fds = fdt->max_fds; - rcu_read_unlock(); - if (n < 0 || n > max_fds) - goto out_nofds; - - /* - * We need 6 bitmaps (in/out/ex for both incoming and outgoing), - * since we used fdset we need to allocate memory in units of - * long-words. - */ - ret = -ENOMEM; - size = FDS_BYTES(n); - bits = kmalloc(6 * size, GFP_KERNEL); - if (!bits) - goto out_nofds; - fds.in = (unsigned long *) bits; - fds.out = (unsigned long *) (bits + size); - fds.ex = (unsigned long *) (bits + 2*size); - fds.res_in = (unsigned long *) (bits + 3*size); - fds.res_out = (unsigned long *) (bits + 4*size); - fds.res_ex = (unsigned long *) (bits + 5*size); - - if ((ret = get_fd_set(n, inp->fds_bits, fds.in)) || - (ret = get_fd_set(n, outp->fds_bits, fds.out)) || - (ret = get_fd_set(n, exp->fds_bits, fds.ex))) - goto out; - zero_fd_set(n, fds.res_in); - zero_fd_set(n, fds.res_out); - zero_fd_set(n, fds.res_ex); - - ret = do_select(n, &fds, &timeout); - /* OSF does not copy back the remaining time. */ - - if (ret < 0) - goto out; - if (!ret) { - ret = -ERESTARTNOHAND; - if (signal_pending(current)) - goto out; - ret = 0; - } - - if (set_fd_set(n, inp->fds_bits, fds.res_in) || - set_fd_set(n, outp->fds_bits, fds.res_out) || - set_fd_set(n, exp->fds_bits, fds.res_ex)) - ret = -EFAULT; - - out: - kfree(bits); - out_nofds: - return ret; + return core_sys_select(n, inp, outp, exp, &timeout); } struct rusage32 { |