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-rw-r--r--arch/arm/kernel/sys_arm.c184
1 files changed, 1 insertions, 183 deletions
diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c
index 78ecaac65206..c23501842b98 100644
--- a/arch/arm/kernel/sys_arm.c
+++ b/arch/arm/kernel/sys_arm.c
@@ -15,7 +15,6 @@
15#include <linux/module.h> 15#include <linux/module.h>
16#include <linux/errno.h> 16#include <linux/errno.h>
17#include <linux/sched.h> 17#include <linux/sched.h>
18#include <linux/slab.h>
19#include <linux/mm.h> 18#include <linux/mm.h>
20#include <linux/sem.h> 19#include <linux/sem.h>
21#include <linux/msg.h> 20#include <linux/msg.h>
@@ -27,188 +26,7 @@
27#include <linux/file.h> 26#include <linux/file.h>
28#include <linux/ipc.h> 27#include <linux/ipc.h>
29#include <linux/uaccess.h> 28#include <linux/uaccess.h>
30 29#include <linux/slab.h>
31extern unsigned long do_mremap(unsigned long addr, unsigned long old_len,
32 unsigned long new_len, unsigned long flags,
33 unsigned long new_addr);
34
35/* common code for old and new mmaps */
36inline long do_mmap2(
37 unsigned long addr, unsigned long len,
38 unsigned long prot, unsigned long flags,
39 unsigned long fd, unsigned long pgoff)
40{
41 int error = -EINVAL;
42 struct file * file = NULL;
43
44 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
45
46 if (flags & MAP_FIXED && addr < FIRST_USER_ADDRESS)
47 goto out;
48
49 error = -EBADF;
50 if (!(flags & MAP_ANONYMOUS)) {
51 file = fget(fd);
52 if (!file)
53 goto out;
54 }
55
56 down_write(&current->mm->mmap_sem);
57 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
58 up_write(&current->mm->mmap_sem);
59
60 if (file)
61 fput(file);
62out:
63 return error;
64}
65
66struct mmap_arg_struct {
67 unsigned long addr;
68 unsigned long len;
69 unsigned long prot;
70 unsigned long flags;
71 unsigned long fd;
72 unsigned long offset;
73};
74
75asmlinkage int old_mmap(struct mmap_arg_struct __user *arg)
76{
77 int error = -EFAULT;
78 struct mmap_arg_struct a;
79
80 if (copy_from_user(&a, arg, sizeof(a)))
81 goto out;
82
83 error = -EINVAL;
84 if (a.offset & ~PAGE_MASK)
85 goto out;
86
87 error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
88out:
89 return error;
90}
91
92asmlinkage unsigned long
93sys_arm_mremap(unsigned long addr, unsigned long old_len,
94 unsigned long new_len, unsigned long flags,
95 unsigned long new_addr)
96{
97 unsigned long ret = -EINVAL;
98
99 if (flags & MREMAP_FIXED && new_addr < FIRST_USER_ADDRESS)
100 goto out;
101
102 down_write(&current->mm->mmap_sem);
103 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
104 up_write(&current->mm->mmap_sem);
105
106out:
107 return ret;
108}
109
110/*
111 * Perform the select(nd, in, out, ex, tv) and mmap() system
112 * calls.
113 */
114
115struct sel_arg_struct {
116 unsigned long n;
117 fd_set __user *inp, *outp, *exp;
118 struct timeval __user *tvp;
119};
120
121asmlinkage int old_select(struct sel_arg_struct __user *arg)
122{
123 struct sel_arg_struct a;
124
125 if (copy_from_user(&a, arg, sizeof(a)))
126 return -EFAULT;
127 /* sys_select() does the appropriate kernel locking */
128 return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp);
129}
130
131#if !defined(CONFIG_AEABI) || defined(CONFIG_OABI_COMPAT)
132/*
133 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
134 *
135 * This is really horribly ugly.
136 */
137asmlinkage int sys_ipc(uint call, int first, int second, int third,
138 void __user *ptr, long fifth)
139{
140 int version, ret;
141
142 version = call >> 16; /* hack for backward compatibility */
143 call &= 0xffff;
144
145 switch (call) {
146 case SEMOP:
147 return sys_semtimedop (first, (struct sembuf __user *)ptr, second, NULL);
148 case SEMTIMEDOP:
149 return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
150 (const struct timespec __user *)fifth);
151
152 case SEMGET:
153 return sys_semget (first, second, third);
154 case SEMCTL: {
155 union semun fourth;
156 if (!ptr)
157 return -EINVAL;
158 if (get_user(fourth.__pad, (void __user * __user *) ptr))
159 return -EFAULT;
160 return sys_semctl (first, second, third, fourth);
161 }
162
163 case MSGSND:
164 return sys_msgsnd(first, (struct msgbuf __user *) ptr,
165 second, third);
166 case MSGRCV:
167 switch (version) {
168 case 0: {
169 struct ipc_kludge tmp;
170 if (!ptr)
171 return -EINVAL;
172 if (copy_from_user(&tmp,(struct ipc_kludge __user *)ptr,
173 sizeof (tmp)))
174 return -EFAULT;
175 return sys_msgrcv (first, tmp.msgp, second,
176 tmp.msgtyp, third);
177 }
178 default:
179 return sys_msgrcv (first,
180 (struct msgbuf __user *) ptr,
181 second, fifth, third);
182 }
183 case MSGGET:
184 return sys_msgget ((key_t) first, second);
185 case MSGCTL:
186 return sys_msgctl(first, second, (struct msqid_ds __user *)ptr);
187
188 case SHMAT:
189 switch (version) {
190 default: {
191 ulong raddr;
192 ret = do_shmat(first, (char __user *)ptr, second, &raddr);
193 if (ret)
194 return ret;
195 return put_user(raddr, (ulong __user *)third);
196 }
197 case 1: /* Of course, we don't support iBCS2! */
198 return -EINVAL;
199 }
200 case SHMDT:
201 return sys_shmdt ((char __user *)ptr);
202 case SHMGET:
203 return sys_shmget (first, second, third);
204 case SHMCTL:
205 return sys_shmctl (first, second,
206 (struct shmid_ds __user *) ptr);
207 default:
208 return -ENOSYS;
209 }
210}
211#endif
212 30
213/* Fork a new task - this creates a new program thread. 31/* Fork a new task - this creates a new program thread.
214 * This is called indirectly via a small wrapper 32 * This is called indirectly via a small wrapper
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-29 04:57:35 -0500