projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) | |
| 3 | * Licensed under the GPL | |
| 4 | */ | |
| 5 | ||
| 6 | #include <stdlib.h> | |
| 7 | #include <errno.h> | |
| 8 | #include <setjmp.h> | |
| 9 | #include <signal.h> | |
| 10 | #include <sys/time.h> | |
| 11 | #include <sys/wait.h> | |
| 12 | #include <asm/page.h> | |
| 13 | #include <asm/unistd.h> | |
| 14 | #include <asm/ptrace.h> | |
| 15 | #include "init.h" | |
| 16 | #include "sysdep/ptrace.h" | |
| 17 | #include "sigcontext.h" | |
| 18 | #include "sysdep/sigcontext.h" | |
| 19 | #include "irq_user.h" | |
| 20 | #include "signal_user.h" | |
| 21 | #include "time_user.h" | |
| 22 | #include "task.h" | |
| 23 | #include "mode.h" | |
| 24 | #include "choose-mode.h" | |
| 25 | #include "kern_util.h" | |
| 26 | #include "user_util.h" | |
| 27 | #include "os.h" | |
| 28 | ||
| 29 | void kill_child_dead(int pid) | |
| 30 | { | |
| 31 | kill(pid, SIGKILL); | |
| 32 | kill(pid, SIGCONT); | |
| 33 | do { | |
| 34 | int n; | |
| 35 | CATCH_EINTR(n = waitpid(pid, NULL, 0)); | |
| 36 | if (n > 0) | |
| 37 | kill(pid, SIGCONT); | |
| 38 | else | |
| 39 | break; | |
| 40 | } while(1); | |
| 41 | } | |
| 42 | ||
| 1da177e4 LT |
43 | void segv_handler(int sig, union uml_pt_regs *regs) |
| 44 | { | |
| c578455a | 45 | struct faultinfo * fi = UPT_FAULTINFO(regs); |
| 1da177e4 | 46 | |
| c578455a BS |
47 | if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){ |
| 48 | bad_segv(*fi, UPT_IP(regs)); | |
| 1da177e4 LT |
49 | return; |
| 50 | } | |
| c578455a | 51 | segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs); |
| 1da177e4 LT |
52 | } |
| 53 | ||
| 54 | void usr2_handler(int sig, union uml_pt_regs *regs) | |
| 55 | { | |
| 56 | CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0); | |
| 57 | } | |
| 58 | ||
| 59 | struct signal_info sig_info[] = { | |
| 60 | [ SIGTRAP ] { .handler = relay_signal, | |
| 61 | .is_irq = 0 }, | |
| 62 | [ SIGFPE ] { .handler = relay_signal, | |
| 63 | .is_irq = 0 }, | |
| 64 | [ SIGILL ] { .handler = relay_signal, | |
| 65 | .is_irq = 0 }, | |
| 66 | [ SIGWINCH ] { .handler = winch, | |
| 67 | .is_irq = 1 }, | |
| 68 | [ SIGBUS ] { .handler = bus_handler, | |
| 69 | .is_irq = 0 }, | |
| 70 | [ SIGSEGV] { .handler = segv_handler, | |
| 71 | .is_irq = 0 }, | |
| 72 | [ SIGIO ] { .handler = sigio_handler, | |
| 73 | .is_irq = 1 }, | |
| 74 | [ SIGVTALRM ] { .handler = timer_handler, | |
| 75 | .is_irq = 1 }, | |
| 76 | [ SIGALRM ] { .handler = timer_handler, | |
| 77 | .is_irq = 1 }, | |
| 78 | [ SIGUSR2 ] { .handler = usr2_handler, | |
| 79 | .is_irq = 0 }, | |
| 80 | }; | |
| 81 | ||
| 82 | void do_longjmp(void *b, int val) | |
| 83 | { | |
| 84 | sigjmp_buf *buf = b; | |
| 85 | ||
| 86 | siglongjmp(*buf, val); | |
| 87 | } | |
| 88 | ||
| 89 | /* | |
| 90 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
| 91 | * Emacs will notice this stuff at the end of the file and automatically | |
| 92 | * adjust the settings for this buffer only. This must remain at the end | |
| 93 | * of the file. | |
| 94 | * --------------------------------------------------------------------------- | |
| 95 | * Local variables: | |
| 96 | * c-file-style: "linux" | |
| 97 | * End: | |
| 98 | */ |