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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [kernel/] [uid16.c] - Blame information for rev 1765

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Line No. Rev Author Line
1 1275 phoenix 
/*
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 *      Wrapper functions for 16bit uid back compatibility. All nicely tied
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 *      together in the faint hope we can take the out in five years time.
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 */
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#include <linux/mm.h>
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#include <linux/utsname.h>
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#include <linux/mman.h>
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#include <linux/smp_lock.h>
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#include <linux/notifier.h>
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#include <linux/reboot.h>
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#include <linux/prctl.h>
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#include <linux/init.h>
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#include <linux/highuid.h>
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#include <asm/uaccess.h>
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extern asmlinkage long sys_chown(const char *, uid_t,gid_t);
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extern asmlinkage long sys_lchown(const char *, uid_t,gid_t);
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extern asmlinkage long sys_fchown(unsigned int, uid_t,gid_t);
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extern asmlinkage long sys_setregid(gid_t, gid_t);
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extern asmlinkage long sys_setgid(gid_t);
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extern asmlinkage long sys_setreuid(uid_t, uid_t);
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extern asmlinkage long sys_setuid(uid_t);
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extern asmlinkage long sys_setresuid(uid_t, uid_t, uid_t);
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extern asmlinkage long sys_setresgid(gid_t, gid_t, gid_t);
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extern asmlinkage long sys_setfsuid(uid_t);
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extern asmlinkage long sys_setfsgid(gid_t);
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asmlinkage long sys_chown16(const char * filename, old_uid_t user, old_gid_t group)
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{
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        return sys_chown(filename, low2highuid(user), low2highgid(group));
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}
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asmlinkage long sys_lchown16(const char * filename, old_uid_t user, old_gid_t group)
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{
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        return sys_lchown(filename, low2highuid(user), low2highgid(group));
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}
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asmlinkage long sys_fchown16(unsigned int fd, old_uid_t user, old_gid_t group)
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{
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        return sys_fchown(fd, low2highuid(user), low2highgid(group));
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}
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asmlinkage long sys_setregid16(old_gid_t rgid, old_gid_t egid)
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{
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        return sys_setregid(low2highgid(rgid), low2highgid(egid));
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}
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asmlinkage long sys_setgid16(old_gid_t gid)
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{
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        return sys_setgid((gid_t)gid);
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}
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asmlinkage long sys_setreuid16(old_uid_t ruid, old_uid_t euid)
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{
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        return sys_setreuid(low2highuid(ruid), low2highuid(euid));
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}
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asmlinkage long sys_setuid16(old_uid_t uid)
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{
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        return sys_setuid((uid_t)uid);
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}
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asmlinkage long sys_setresuid16(old_uid_t ruid, old_uid_t euid, old_uid_t suid)
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{
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        return sys_setresuid(low2highuid(ruid), low2highuid(euid),
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                low2highuid(suid));
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}
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asmlinkage long sys_getresuid16(old_uid_t *ruid, old_uid_t *euid, old_uid_t *suid)
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{
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        int retval;
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        if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
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            !(retval = put_user(high2lowuid(current->euid), euid)))
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                retval = put_user(high2lowuid(current->suid), suid);
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        return retval;
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}
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asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid)
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{
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        return sys_setresgid(low2highgid(rgid), low2highgid(egid),
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                low2highgid(sgid));
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}
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asmlinkage long sys_getresgid16(old_gid_t *rgid, old_gid_t *egid, old_gid_t *sgid)
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{
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        int retval;
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        if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
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            !(retval = put_user(high2lowgid(current->egid), egid)))
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                retval = put_user(high2lowgid(current->sgid), sgid);
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        return retval;
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}
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asmlinkage long sys_setfsuid16(old_uid_t uid)
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{
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        return sys_setfsuid((uid_t)uid);
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}
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asmlinkage long sys_setfsgid16(old_gid_t gid)
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{
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        return sys_setfsgid((gid_t)gid);
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}
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asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t *grouplist)
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{
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        old_gid_t groups[NGROUPS];
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        int i,j;
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        if (gidsetsize < 0)
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                return -EINVAL;
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        i = current->ngroups;
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        if (gidsetsize) {
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                if (i > gidsetsize)
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                        return -EINVAL;
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                for(j=0;j<i;j++)
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                        groups[j] = current->groups[j];
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                if (copy_to_user(grouplist, groups, sizeof(old_gid_t)*i))
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                        return -EFAULT;
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        }
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        return i;
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}
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asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t *grouplist)
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{
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        old_gid_t groups[NGROUPS];
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        int i;
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        if (!capable(CAP_SETGID))
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                return -EPERM;
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        if ((unsigned) gidsetsize > NGROUPS)
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                return -EINVAL;
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        if (copy_from_user(groups, grouplist, gidsetsize * sizeof(old_gid_t)))
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                return -EFAULT;
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        for (i = 0 ; i < gidsetsize ; i++)
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                current->groups[i] = (gid_t)groups[i];
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        current->ngroups = gidsetsize;
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        return 0;
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}
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asmlinkage long sys_getuid16(void)
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{
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        return high2lowuid(current->uid);
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}
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asmlinkage long sys_geteuid16(void)
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{
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        return high2lowuid(current->euid);
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}
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asmlinkage long sys_getgid16(void)
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{
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        return high2lowgid(current->gid);
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}
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asmlinkage long sys_getegid16(void)
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{
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        return high2lowgid(current->egid);
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}

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