uid16.c (f838bad1b3be8ca0c785ee0e0c570dfda74cf377) uid16.c (b6dff3ec5e116e3af6f537d4caedcad6b9e5082a)
1/*
2 * Wrapper functions for 16bit uid back compatibility. All nicely tied
3 * together in the faint hope we can take the out in five years time.
4 */
5
6#include <linux/mm.h>
7#include <linux/utsname.h>
8#include <linux/mman.h>

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81 asmlinkage_protect(3, ret, ruid, euid, suid);
82 return ret;
83}
84
85asmlinkage long sys_getresuid16(old_uid_t __user *ruid, old_uid_t __user *euid, old_uid_t __user *suid)
86{
87 int retval;
88
1/*
2 * Wrapper functions for 16bit uid back compatibility. All nicely tied
3 * together in the faint hope we can take the out in five years time.
4 */
5
6#include <linux/mm.h>
7#include <linux/utsname.h>
8#include <linux/mman.h>

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81 asmlinkage_protect(3, ret, ruid, euid, suid);
82 return ret;
83}
84
85asmlinkage long sys_getresuid16(old_uid_t __user *ruid, old_uid_t __user *euid, old_uid_t __user *suid)
86{
87 int retval;
88
89 if (!(retval = put_user(high2lowuid(current->uid), ruid)) &&
90 !(retval = put_user(high2lowuid(current->euid), euid)))
91 retval = put_user(high2lowuid(current->suid), suid);
89 if (!(retval = put_user(high2lowuid(current->cred->uid), ruid)) &&
90 !(retval = put_user(high2lowuid(current->cred->euid), euid)))
91 retval = put_user(high2lowuid(current->cred->suid), suid);
92
93 return retval;
94}
95
96asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid)
97{
98 long ret = sys_setresgid(low2highgid(rgid), low2highgid(egid),
99 low2highgid(sgid));
100 /* avoid REGPARM breakage on x86: */
101 asmlinkage_protect(3, ret, rgid, egid, sgid);
102 return ret;
103}
104
105asmlinkage long sys_getresgid16(old_gid_t __user *rgid, old_gid_t __user *egid, old_gid_t __user *sgid)
106{
107 int retval;
108
92
93 return retval;
94}
95
96asmlinkage long sys_setresgid16(old_gid_t rgid, old_gid_t egid, old_gid_t sgid)
97{
98 long ret = sys_setresgid(low2highgid(rgid), low2highgid(egid),
99 low2highgid(sgid));
100 /* avoid REGPARM breakage on x86: */
101 asmlinkage_protect(3, ret, rgid, egid, sgid);
102 return ret;
103}
104
105asmlinkage long sys_getresgid16(old_gid_t __user *rgid, old_gid_t __user *egid, old_gid_t __user *sgid)
106{
107 int retval;
108
109 if (!(retval = put_user(high2lowgid(current->gid), rgid)) &&
110 !(retval = put_user(high2lowgid(current->egid), egid)))
111 retval = put_user(high2lowgid(current->sgid), sgid);
109 if (!(retval = put_user(high2lowgid(current->cred->gid), rgid)) &&
110 !(retval = put_user(high2lowgid(current->cred->egid), egid)))
111 retval = put_user(high2lowgid(current->cred->sgid), sgid);
112
113 return retval;
114}
115
116asmlinkage long sys_setfsuid16(old_uid_t uid)
117{
118 long ret = sys_setfsuid(low2highuid(uid));
119 /* avoid REGPARM breakage on x86: */

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161
162asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist)
163{
164 int i = 0;
165
166 if (gidsetsize < 0)
167 return -EINVAL;
168
112
113 return retval;
114}
115
116asmlinkage long sys_setfsuid16(old_uid_t uid)
117{
118 long ret = sys_setfsuid(low2highuid(uid));
119 /* avoid REGPARM breakage on x86: */

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161
162asmlinkage long sys_getgroups16(int gidsetsize, old_gid_t __user *grouplist)
163{
164 int i = 0;
165
166 if (gidsetsize < 0)
167 return -EINVAL;
168
169 get_group_info(current->group_info);
170 i = current->group_info->ngroups;
169 get_group_info(current->cred->group_info);
170 i = current->cred->group_info->ngroups;
171 if (gidsetsize) {
172 if (i > gidsetsize) {
173 i = -EINVAL;
174 goto out;
175 }
171 if (gidsetsize) {
172 if (i > gidsetsize) {
173 i = -EINVAL;
174 goto out;
175 }
176 if (groups16_to_user(grouplist, current->group_info)) {
176 if (groups16_to_user(grouplist, current->cred->group_info)) {
177 i = -EFAULT;
178 goto out;
179 }
180 }
181out:
177 i = -EFAULT;
178 goto out;
179 }
180 }
181out:
182 put_group_info(current->group_info);
182 put_group_info(current->cred->group_info);
183 return i;
184}
185
186asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist)
187{
188 struct group_info *group_info;
189 int retval;
190

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205 retval = set_current_groups(group_info);
206 put_group_info(group_info);
207
208 return retval;
209}
210
211asmlinkage long sys_getuid16(void)
212{
183 return i;
184}
185
186asmlinkage long sys_setgroups16(int gidsetsize, old_gid_t __user *grouplist)
187{
188 struct group_info *group_info;
189 int retval;
190

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205 retval = set_current_groups(group_info);
206 put_group_info(group_info);
207
208 return retval;
209}
210
211asmlinkage long sys_getuid16(void)
212{
213 return high2lowuid(current->uid);
213 return high2lowuid(current->cred->uid);
214}
215
216asmlinkage long sys_geteuid16(void)
217{
214}
215
216asmlinkage long sys_geteuid16(void)
217{
218 return high2lowuid(current->euid);
218 return high2lowuid(current->cred->euid);
219}
220
221asmlinkage long sys_getgid16(void)
222{
219}
220
221asmlinkage long sys_getgid16(void)
222{
223 return high2lowgid(current->gid);
223 return high2lowgid(current->cred->gid);
224}
225
226asmlinkage long sys_getegid16(void)
227{
224}
225
226asmlinkage long sys_getegid16(void)
227{
228 return high2lowgid(current->egid);
228 return high2lowgid(current->cred->egid);
229}
229}