1 /*
2 * No copyright is claimed. This code is in the public domain; do with
3 * it what you wish.
4
5 * Written by:
6 * Sami Kerola <kerolasa@iki.fi>
7 * Karel Zak <kzak@redhat.com>
8 * Niklas Hambüchen <mail@nh2.me>
9 */
10
11 #include <ctype.h> /* for isdigit() */
12 #include <signal.h>
13 #include <unistd.h>
14 #include <string.h>
15 #include <errno.h>
16
17 #include "c.h"
18 #include "cctype.h"
19 #include "strutils.h"
20 #include "signames.h"
21
22 static const struct ul_signal_name {
23 const char *name;
24 int val;
25 } ul_signames[] = {
26 /* POSIX signals */
27 { "HUP", SIGHUP }, /* 1 */
28 { "INT", SIGINT }, /* 2 */
29 { "QUIT", SIGQUIT }, /* 3 */
30 { "ILL", SIGILL }, /* 4 */
31 #ifdef SIGTRAP
32 { "TRAP", SIGTRAP }, /* 5 */
33 #endif
34 { "ABRT", SIGABRT }, /* 6 */
35 #ifdef SIGIOT
36 { "IOT", SIGIOT }, /* 6, same as SIGABRT */
37 #endif
38 #ifdef SIGEMT
39 { "EMT", SIGEMT }, /* 7 (mips,alpha,sparc*) */
40 #endif
41 #ifdef SIGBUS
42 { "BUS", SIGBUS }, /* 7 (arm,i386,m68k,ppc), 10 (mips,alpha,sparc*) */
43 #endif
44 { "FPE", SIGFPE }, /* 8 */
45 { "KILL", SIGKILL }, /* 9 */
46 { "USR1", SIGUSR1 }, /* 10 (arm,i386,m68k,ppc), 30 (alpha,sparc*), 16 (mips) */
47 { "SEGV", SIGSEGV }, /* 11 */
48 { "USR2", SIGUSR2 }, /* 12 (arm,i386,m68k,ppc), 31 (alpha,sparc*), 17 (mips) */
49 { "PIPE", SIGPIPE }, /* 13 */
50 { "ALRM", SIGALRM }, /* 14 */
51 { "TERM", SIGTERM }, /* 15 */
52 #ifdef SIGSTKFLT
53 { "STKFLT", SIGSTKFLT }, /* 16 (arm,i386,m68k,ppc) */
54 #endif
55 { "CHLD", SIGCHLD }, /* 17 (arm,i386,m68k,ppc), 20 (alpha,sparc*), 18 (mips) */
56 #ifdef SIGCLD
57 { "CLD", SIGCLD }, /* same as SIGCHLD (mips) */
58 #endif
59 { "CONT", SIGCONT }, /* 18 (arm,i386,m68k,ppc), 19 (alpha,sparc*), 25 (mips) */
60 { "STOP", SIGSTOP }, /* 19 (arm,i386,m68k,ppc), 17 (alpha,sparc*), 23 (mips) */
61 { "TSTP", SIGTSTP }, /* 20 (arm,i386,m68k,ppc), 18 (alpha,sparc*), 24 (mips) */
62 { "TTIN", SIGTTIN }, /* 21 (arm,i386,m68k,ppc,alpha,sparc*), 26 (mips) */
63 { "TTOU", SIGTTOU }, /* 22 (arm,i386,m68k,ppc,alpha,sparc*), 27 (mips) */
64 #ifdef SIGURG
65 { "URG", SIGURG }, /* 23 (arm,i386,m68k,ppc), 16 (alpha,sparc*), 21 (mips) */
66 #endif
67 #ifdef SIGXCPU
68 { "XCPU", SIGXCPU }, /* 24 (arm,i386,m68k,ppc,alpha,sparc*), 30 (mips) */
69 #endif
70 #ifdef SIGXFSZ
71 { "XFSZ", SIGXFSZ }, /* 25 (arm,i386,m68k,ppc,alpha,sparc*), 31 (mips) */
72 #endif
73 #ifdef SIGVTALRM
74 { "VTALRM", SIGVTALRM }, /* 26 (arm,i386,m68k,ppc,alpha,sparc*), 28 (mips) */
75 #endif
76 #ifdef SIGPROF
77 { "PROF", SIGPROF }, /* 27 (arm,i386,m68k,ppc,alpha,sparc*), 29 (mips) */
78 #endif
79 #ifdef SIGWINCH
80 { "WINCH", SIGWINCH }, /* 28 (arm,i386,m68k,ppc,alpha,sparc*), 20 (mips) */
81 #endif
82 #ifdef SIGIO
83 { "IO", SIGIO }, /* 29 (arm,i386,m68k,ppc), 23 (alpha,sparc*), 22 (mips) */
84 #endif
85 #ifdef SIGPOLL
86 { "POLL", SIGPOLL }, /* same as SIGIO */
87 #endif
88 #ifdef SIGINFO
89 { "INFO", SIGINFO }, /* 29 (alpha) */
90 #endif
91 #ifdef SIGLOST
92 { "LOST", SIGLOST }, /* 29 (arm,i386,m68k,ppc,sparc*) */
93 #endif
94 #ifdef SIGPWR
95 { "PWR", SIGPWR }, /* 30 (arm,i386,m68k,ppc), 29 (alpha,sparc*), 19 (mips) */
96 #endif
97 #ifdef SIGUNUSED
98 { "UNUSED", SIGUNUSED }, /* 31 (arm,i386,m68k,ppc) */
99 #endif
100 #ifdef SIGSYS
101 { "SYS", SIGSYS }, /* 31 (mips,alpha,sparc*) */
102 #endif
103 };
104
105 #ifdef SIGRTMIN
106 static int rtsig_to_signum(const char *sig)
107 {
108 int num, maxi = 0;
109 char *ep = NULL;
110
111 if (c_strncasecmp(sig, "min+", 4) == 0)
112 sig += 4;
113 else if (c_strncasecmp(sig, "max-", 4) == 0) {
114 sig += 4;
115 maxi = 1;
116 }
117 if (!isdigit(*sig))
118 return -1;
119 errno = 0;
120 num = strtol(sig, &ep, 10);
121 if (!ep || sig == ep || errno || num < 0)
122 return -1;
123 num = maxi ? SIGRTMAX - num : SIGRTMIN + num;
124 if (num < SIGRTMIN || SIGRTMAX < num)
125 return -1;
126 return num;
127 }
128 #endif
129
130 int signame_to_signum(const char *sig)
131 {
132 size_t n;
133
134 if (!c_strncasecmp(sig, "sig", 3))
135 sig += 3;
136 #ifdef SIGRTMIN
137 /* RT signals */
138 if (!c_strncasecmp(sig, "rt", 2))
139 return rtsig_to_signum(sig + 2);
140 #endif
141 /* Normal signals */
142 for (n = 0; n < ARRAY_SIZE(ul_signames); n++) {
143 if (!c_strcasecmp(ul_signames[n].name, sig))
144 return ul_signames[n].val;
145 }
146 return -1;
147 }
148
149 const char *signum_to_signame(int signum)
150 {
151 size_t n;
152
153 for (n = 0; n < ARRAY_SIZE(ul_signames); n++) {
154 if (ul_signames[n].val == signum) {
155 return ul_signames[n].name;
156 }
157 }
158
159 return NULL;
160 }
161
162 int get_signame_by_idx(size_t idx, const char **signame, int *signum)
163 {
164 if (idx >= ARRAY_SIZE(ul_signames))
165 return -1;
166
167 if (signame)
168 *signame = ul_signames[idx].name;
169 if (signum)
170 *signum = ul_signames[idx].val;
171 return 0;
172
173 }
174