Annotation of embedaddon/tmux/osdep-netbsd.c, revision 1.1.1.1
1.1 misho 1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/param.h>
20: #include <sys/proc.h>
21: #include <sys/stat.h>
22: #include <sys/sysctl.h>
23:
24: #include <errno.h>
25: #include <event.h>
26: #include <stdlib.h>
27: #include <string.h>
28: #include <unistd.h>
29:
30: #define is_runnable(p) \
31: ((p)->p_stat == LSRUN || (p)->p_stat == SIDL)
32: #define is_stopped(p) \
33: ((p)->p_stat == SSTOP || (p)->p_stat == SZOMB)
34:
35: struct kinfo_proc2 *cmp_procs(struct kinfo_proc2 *, struct kinfo_proc2 *);
36: char *osdep_get_name(int, char *);
37: char *osdep_get_cwd(int);
38: struct event_base *osdep_event_init(void);
39:
40: struct kinfo_proc2 *
41: cmp_procs(struct kinfo_proc2 *p1, struct kinfo_proc2 *p2)
42: {
43: if (is_runnable(p1) && !is_runnable(p2))
44: return (p1);
45: if (!is_runnable(p1) && is_runnable(p2))
46: return (p2);
47:
48: if (is_stopped(p1) && !is_stopped(p2))
49: return (p1);
50: if (!is_stopped(p1) && is_stopped(p2))
51: return (p2);
52:
53: if (p1->p_estcpu > p2->p_estcpu)
54: return (p1);
55: if (p1->p_estcpu < p2->p_estcpu)
56: return (p2);
57:
58: if (p1->p_slptime < p2->p_slptime)
59: return (p1);
60: if (p1->p_slptime > p2->p_slptime)
61: return (p2);
62:
63: if (p1->p_pid > p2->p_pid)
64: return (p1);
65: return (p2);
66: }
67:
68: char *
69: osdep_get_name(int fd, __unused char *tty)
70: {
71: int mib[6];
72: struct stat sb;
73: size_t len, i;
74: struct kinfo_proc2 *buf, *newbuf, *bestp;
75: char *name;
76:
77: if (stat(tty, &sb) == -1)
78: return (NULL);
79: if ((mib[3] = tcgetpgrp(fd)) == -1)
80: return (NULL);
81:
82: buf = NULL;
83: len = sizeof bestp;
84:
85: mib[0] = CTL_KERN;
86: mib[1] = KERN_PROC2;
87: mib[2] = KERN_PROC_PGRP;
88: mib[4] = sizeof *buf;
89:
90: retry:
91: mib[5] = 0;
92:
93: if (sysctl(mib, __arraycount(mib), NULL, &len, NULL, 0) == -1)
94: return (NULL);
95:
96: if ((newbuf = realloc(buf, len)) == NULL)
97: goto error;
98: buf = newbuf;
99:
100: mib[5] = len / (sizeof *buf);
101: if (sysctl(mib, __arraycount(mib), buf, &len, NULL, 0) == -1) {
102: if (errno == ENOMEM)
103: goto retry;
104: goto error;
105: }
106:
107: bestp = NULL;
108: for (i = 0; i < len / (sizeof *buf); i++) {
109: if (buf[i].p_tdev != sb.st_rdev)
110: continue;
111: if (bestp == NULL)
112: bestp = &buf[i];
113: else
114: bestp = cmp_procs(&buf[i], bestp);
115: }
116:
117: name = NULL;
118: if (bestp != NULL)
119: name = strdup(bestp->p_comm);
120:
121: free(buf);
122: return (name);
123:
124: error:
125: free(buf);
126: return (NULL);
127: }
128:
129: char *
130: osdep_get_cwd(int fd)
131: {
132: return (NULL);
133: }
134:
135: struct event_base *
136: osdep_event_init(void)
137: {
138: return (event_init());
139: }
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