mirror of https://github.com/dzavalishin/oskit/
89 lines
2.2 KiB
C
Executable File
89 lines
2.2 KiB
C
Executable File
/*
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* Copyright (c) 1997, 1998, 1999 The University of Utah and the Flux Group.
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*
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* This file is part of the OSKit Linux Glue Libraries, which are free
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* software, also known as "open source;" you can redistribute them and/or
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* modify them under the terms of the GNU General Public License (GPL),
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* version 2, as published by the Free Software Foundation (FSF).
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*
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* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
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* received a copy of the GPL along with the OSKit; see the file COPYING. If
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* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
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*/
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/*
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* Code to initialize `current' from a stack-allocated task_struct.
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*/
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#include <oskit/types.h>
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#include <oskit/principal.h>
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#include <oskit/error.h>
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#include <linux/malloc.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include "current.h"
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oskit_error_t
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fs_linux_create_current(struct task_struct *ts)
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{
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oskit_principal_t *prin;
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oskit_identity_t id;
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oskit_error_t err;
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int i;
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ts->state = TASK_RUNNING;
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ts->counter = 0;
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err = oskit_get_call_context(&oskit_principal_iid, (void *)&prin);
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if (!err) {
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err = oskit_principal_getid(prin, &id);
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if (err) {
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oskit_principal_release(prin);
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return err;
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}
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ts->fsuid = id.uid;
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ts->fsgid = id.gid;
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ts->uid = id.uid;
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ts->gid = id.gid;
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for (i = 0; i < id.ngroups && i < NGROUPS; i++)
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ts->groups[i] = id.groups[i];
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for ( ; i < NGROUPS; i++)
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ts->groups[i] = NOGROUP;
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oskit_principal_release(prin);
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}
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else {
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ts->fsuid = ts->fsgid = ts->uid = ts->gid = 0;
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for (i = 0; i < NGROUPS; i++)
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ts->groups[i] = NOGROUP;
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}
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ts->rlim[RLIMIT_FSIZE].rlim_cur = RLIM_INFINITY;
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ts->rlim[RLIMIT_FSIZE].rlim_max = RLIM_INFINITY;
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ts->link_count = 0;
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ts->fs = kmalloc(sizeof(struct fs_struct), GFP_KERNEL);
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if (ts->fs == NULL)
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return OSKIT_ENOMEM;
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atomic_set(&ts->fs->count, 0);
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ts->fs->umask = 0;
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ts->fs->root = NULL;
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ts->fs->pwd = NULL;
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current = ts;
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return 0;
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}
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void
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fs_linux_destroy_current(void)
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{
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kfree(current->fs);
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current = (struct task_struct *)0xdeadcccc;
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}
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