2 * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
13 #include <sys/utsname.h>
14 #include <sys/param.h>
16 #include "asm/types.h"
25 #include "user_util.h"
26 #include "kern_util.h"
30 #include "ptrace_user.h"
31 #include "uml-config.h"
35 while(1) sleep(1000000);
38 void stack_protections(unsigned long address
)
40 int prot
= PROT_READ
| PROT_WRITE
| PROT_EXEC
;
42 if(mprotect((void *) address
, page_size(), prot
) < 0)
43 panic("protecting stack failed, errno = %d", errno
);
46 void task_protections(unsigned long address
)
48 unsigned long guard
= address
+ page_size();
49 unsigned long stack
= guard
+ page_size();
53 if(mprotect((void *) stack
, page_size(), prot
) < 0)
54 panic("protecting guard page failed, errno = %d", errno
);
56 pages
= (1 << UML_CONFIG_KERNEL_STACK_ORDER
) - 2;
57 prot
= PROT_READ
| PROT_WRITE
| PROT_EXEC
;
58 if(mprotect((void *) stack
, pages
* page_size(), prot
) < 0)
59 panic("protecting stack failed, errno = %d", errno
);
62 int wait_for_stop(int pid
, int sig
, int cont_type
, void *relay
)
64 sigset_t
*relay_signals
= relay
;
68 CATCH_EINTR(ret
= waitpid(pid
, &status
, WUNTRACED
));
70 !WIFSTOPPED(status
) || (WSTOPSIG(status
) != sig
)){
72 printk("wait failed, errno = %d\n",
75 else if(WIFEXITED(status
))
76 printk("process %d exited with status %d\n",
77 pid
, WEXITSTATUS(status
));
78 else if(WIFSIGNALED(status
))
79 printk("process %d exited with signal %d\n",
80 pid
, WTERMSIG(status
));
81 else if((WSTOPSIG(status
) == SIGVTALRM
) ||
82 (WSTOPSIG(status
) == SIGALRM
) ||
83 (WSTOPSIG(status
) == SIGIO
) ||
84 (WSTOPSIG(status
) == SIGPROF
) ||
85 (WSTOPSIG(status
) == SIGCHLD
) ||
86 (WSTOPSIG(status
) == SIGWINCH
) ||
87 (WSTOPSIG(status
) == SIGINT
)){
88 ptrace(cont_type
, pid
, 0, WSTOPSIG(status
));
91 else if((relay_signals
!= NULL
) &&
92 sigismember(relay_signals
, WSTOPSIG(status
))){
93 ptrace(cont_type
, pid
, 0, WSTOPSIG(status
));
96 else printk("process %d stopped with signal %d\n",
97 pid
, WSTOPSIG(status
));
98 panic("wait_for_stop failed to wait for %d to stop "
99 "with %d\n", pid
, sig
);
110 CATCH_EINTR(err
= tcgetattr(fd
, &tt
));
116 CATCH_EINTR(err
= tcsetattr(fd
, TCSADRAIN
, &tt
));
120 /* XXX tcsetattr could have applied only some changes
121 * (and cfmakeraw() is a set of changes) */
125 void setup_machinename(char *machine_out
)
130 #if defined(UML_CONFIG_UML_X86) && !defined(UML_CONFIG_64BIT)
131 if (!strcmp(host
.machine
, "x86_64")) {
132 strcpy(machine_out
, "i686");
136 strcpy(machine_out
, host
.machine
);
139 char host_info
[(_UTSNAME_LENGTH
+ 1) * 4 + _UTSNAME_NODENAME_LENGTH
+ 1];
141 void setup_hostinfo(void)
146 sprintf(host_info
, "%s %s %s %s %s", host
.sysname
, host
.nodename
,
147 host
.release
, host
.version
, host
.machine
);
150 int setjmp_wrapper(void (*proc
)(void *, void *), ...)
156 n
= sigsetjmp(buf
, 1);
158 va_start(args
, proc
);
159 (*proc
)(&buf
, &args
);
166 * Overrides for Emacs so that we follow Linus's tabbing style.
167 * Emacs will notice this stuff at the end of the file and automatically
168 * adjust the settings for this buffer only. This must remain at the end
170 * ---------------------------------------------------------------------------
172 * c-file-style: "linux"