proc_util.c (179185) | proc_util.c (210688) |
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1/*- | 1/*- |
2 * Copyright (c) 2010 The FreeBSD Foundation |
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2 * Copyright (c) 2008 John Birrell (jb@freebsd.org) 3 * All rights reserved. | 3 * Copyright (c) 2008 John Birrell (jb@freebsd.org) 4 * All rights reserved. |
5 * 6 * Portions of this software were developed by Rui Paulo under sponsorship 7 * from the FreeBSD Foundation. |
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4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the --- 6 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the --- 6 unchanged lines hidden (view full) --- 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * |
26 * $FreeBSD: head/lib/libproc/proc_util.c 179185 2008-05-22 02:09:21Z jb $ | 30 * $FreeBSD: head/lib/libproc/proc_util.c 210688 2010-07-31 16:10:20Z rpaulo $ |
27 */ 28 | 31 */ 32 |
29#include "_libproc.h" 30#include <errno.h> 31#include <unistd.h> | 33#include <sys/types.h> |
32#include <sys/ptrace.h> 33#include <sys/wait.h> | 34#include <sys/ptrace.h> 35#include <sys/wait.h> |
36#include <err.h> 37#include <errno.h> 38#include <unistd.h> |
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34#include <stdio.h> | 39#include <stdio.h> |
40#include <signal.h> 41#include <string.h> 42#include "_libproc.h" |
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35 36int 37proc_clearflags(struct proc_handle *phdl, int mask) 38{ | 43 44int 45proc_clearflags(struct proc_handle *phdl, int mask) 46{ |
47 |
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39 if (phdl == NULL) 40 return (EINVAL); 41 42 phdl->flags &= ~mask; 43 44 return (0); 45} 46 | 48 if (phdl == NULL) 49 return (EINVAL); 50 51 phdl->flags &= ~mask; 52 53 return (0); 54} 55 |
56/* 57 * NB: we return -1 as the Solaris libproc Psetrun() function. 58 */ |
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47int 48proc_continue(struct proc_handle *phdl) 49{ | 59int 60proc_continue(struct proc_handle *phdl) 61{ |
62 |
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50 if (phdl == NULL) | 63 if (phdl == NULL) |
51 return (EINVAL); | 64 return (-1); |
52 53 if (ptrace(PT_CONTINUE, phdl->pid, (caddr_t)(uintptr_t) 1, 0) != 0) | 65 66 if (ptrace(PT_CONTINUE, phdl->pid, (caddr_t)(uintptr_t) 1, 0) != 0) |
54 return (errno); | 67 return (-1); |
55 56 phdl->status = PS_RUN; 57 58 return (0); 59} 60 61int | 68 69 phdl->status = PS_RUN; 70 71 return (0); 72} 73 74int |
62proc_detach(struct proc_handle *phdl) | 75proc_detach(struct proc_handle *phdl, int reason) |
63{ | 76{ |
77 int status; 78 |
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64 if (phdl == NULL) 65 return (EINVAL); | 79 if (phdl == NULL) 80 return (EINVAL); |
81 if (reason == PRELEASE_KILL) { 82 kill(phdl->pid, SIGKILL); 83 return (0); 84 } 85 if (ptrace(PT_DETACH, phdl->pid, 0, 0) != 0 && errno == ESRCH) 86 return (0); 87 if (errno == EBUSY) { 88 kill(phdl->pid, SIGSTOP); 89 waitpid(phdl->pid, &status, WUNTRACED); 90 ptrace(PT_DETACH, phdl->pid, 0, 0); 91 kill(phdl->pid, SIGCONT); 92 return (0); 93 } |
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66 | 94 |
67 if (ptrace(PT_DETACH, phdl->pid, 0, 0) != 0) 68 return (errno); 69 | |
70 return (0); 71} 72 73int 74proc_getflags(struct proc_handle *phdl) 75{ | 95 return (0); 96} 97 98int 99proc_getflags(struct proc_handle *phdl) 100{ |
101 |
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76 if (phdl == NULL) 77 return (-1); 78 79 return(phdl->flags); 80} 81 82int 83proc_setflags(struct proc_handle *phdl, int mask) 84{ | 102 if (phdl == NULL) 103 return (-1); 104 105 return(phdl->flags); 106} 107 108int 109proc_setflags(struct proc_handle *phdl, int mask) 110{ |
111 |
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85 if (phdl == NULL) 86 return (EINVAL); 87 88 phdl->flags |= mask; 89 90 return (0); 91} 92 93int 94proc_state(struct proc_handle *phdl) 95{ | 112 if (phdl == NULL) 113 return (EINVAL); 114 115 phdl->flags |= mask; 116 117 return (0); 118} 119 120int 121proc_state(struct proc_handle *phdl) 122{ |
123 |
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96 if (phdl == NULL) 97 return (-1); 98 99 return (phdl->status); 100} 101 | 124 if (phdl == NULL) 125 return (-1); 126 127 return (phdl->status); 128} 129 |
102int 103proc_wait(struct proc_handle *phdl) | 130pid_t 131proc_getpid(struct proc_handle *phdl) |
104{ | 132{ |
105 int status = 0; 106 struct kevent kev; | |
107 108 if (phdl == NULL) | 133 134 if (phdl == NULL) |
109 return (EINVAL); | 135 return (-1); |
110 | 136 |
111 if (kevent(phdl->kq, NULL, 0, &kev, 1, NULL) <= 0) 112 return (0); | 137 return (phdl->pid); 138} |
113 | 139 |
114 switch (kev.filter) { 115 /* Child has exited */ 116 case EVFILT_PROC: /* target has exited */ | 140int 141proc_wstatus(struct proc_handle *phdl) 142{ 143 int status; 144 145 if (phdl == NULL) 146 return (-1); 147 if (waitpid(phdl->pid, &status, WUNTRACED) < 0) 148 return (-1); 149 if (WIFSTOPPED(status)) 150 phdl->status = PS_STOP; 151 if (WIFEXITED(status) || WIFSIGNALED(status)) |
117 phdl->status = PS_UNDEAD; | 152 phdl->status = PS_UNDEAD; |
118 break; 119 default: 120 break; 121 } | 153 phdl->wstat = status; |
122 123 return (status); 124} 125 | 154 155 return (status); 156} 157 |
126pid_t 127proc_getpid(struct proc_handle *phdl) | 158int 159proc_getwstat(struct proc_handle *phdl) |
128{ | 160{ |
161 |
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129 if (phdl == NULL) 130 return (-1); 131 | 162 if (phdl == NULL) 163 return (-1); 164 |
132 return (phdl->pid); | 165 return (phdl->wstat); |
133} | 166} |
167 168char * 169proc_signame(int sig, char *name, size_t namesz) 170{ 171 172 strlcpy(name, strsignal(sig), namesz); 173 174 return (name); 175} 176 177int 178proc_read(struct proc_handle *phdl, char *buf, size_t size, size_t addr) 179{ 180 struct ptrace_io_desc piod; 181 182 if (phdl == NULL) 183 return (-1); 184 piod.piod_op = PIOD_READ_D; 185 piod.piod_len = size; 186 piod.piod_addr = (void *)buf; 187 piod.piod_offs = (void *)addr; 188 189 if (ptrace(PT_IO, phdl->pid, (caddr_t)&piod, 0) < 0) 190 return (-1); 191 return (piod.piod_len); 192} 193 194const lwpstatus_t * 195proc_getlwpstatus(struct proc_handle *phdl) 196{ 197 struct ptrace_lwpinfo lwpinfo; 198 lwpstatus_t *psp = &phdl->lwps; 199 siginfo_t *siginfo; 200 201 if (phdl == NULL) 202 return (NULL); 203 if (ptrace(PT_LWPINFO, phdl->pid, (caddr_t)&lwpinfo,sizeof(lwpinfo)) < 0) 204 return (NULL); 205 siginfo = &lwpinfo.pl_siginfo; 206 if (lwpinfo.pl_event == PL_EVENT_SIGNAL && 207 (lwpinfo.pl_flags & PL_FLAG_SI) && 208 siginfo->si_signo == SIGTRAP && 209 (siginfo->si_code == TRAP_BRKPT || 210 siginfo->si_code == TRAP_TRACE)) { 211 psp->pr_why = PR_FAULTED; 212 psp->pr_what = FLTBPT; 213 } else if (lwpinfo.pl_flags & PL_FLAG_SCE) { 214 psp->pr_why = PR_SYSENTRY; 215 } else if (lwpinfo.pl_flags & PL_FLAG_SCX) { 216 psp->pr_why = PR_SYSEXIT; 217 } 218 219 return (psp); 220} |
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