2 * This file contains various random system calls that
3 * have a non-standard calling sequence on the Linux/i386
7 #include <linux/errno.h>
8 #include <linux/sched.h>
11 #include <linux/smp.h>
12 #include <linux/sem.h>
13 #include <linux/msg.h>
14 #include <linux/shm.h>
15 #include <linux/stat.h>
16 #include <linux/syscalls.h>
17 #include <linux/mman.h>
18 #include <linux/file.h>
19 #include <linux/utsname.h>
20 #include <linux/ipc.h>
22 #include <linux/uaccess.h>
23 #include <linux/unistd.h>
25 #include <asm/syscalls.h>
30 asmlinkage int sys_uname(struct old_utsname __user *name)
36 err = copy_to_user(name, utsname(), sizeof(*name));
38 return err? -EFAULT:0;
41 asmlinkage int sys_olduname(struct oldold_utsname __user *name)
47 if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname)))
52 error = __copy_to_user(&name->sysname, &utsname()->sysname,
54 error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
55 error |= __copy_to_user(&name->nodename, &utsname()->nodename,
57 error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
58 error |= __copy_to_user(&name->release, &utsname()->release,
60 error |= __put_user(0, name->release + __OLD_UTS_LEN);
61 error |= __copy_to_user(&name->version, &utsname()->version,
63 error |= __put_user(0, name->version + __OLD_UTS_LEN);
64 error |= __copy_to_user(&name->machine, &utsname()->machine,
66 error |= __put_user(0, name->machine + __OLD_UTS_LEN);
70 error = error ? -EFAULT : 0;
77 * Do a system call from kernel instead of calling sys_execve so we
78 * end up with proper pt_regs.
80 int kernel_execve(const char *filename, char *const argv[], char *const envp[])
83 asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx"
85 : "0" (__NR_execve), "ri" (filename), "c" (argv), "d" (envp) : "memory");