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4ecaa511 »
2011-12-09 Import upstream snapshot from SVN r2647
1 /* $Id: osdep-dragonfly.c 2647 2011-12-09 16:37:29Z nicm $ */
b0169484 »
2011-10-03 Import upstream snapshot from SVN r2608
2
3 /*
4 * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
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/stat.h>
21 #include <sys/sysctl.h>
22 #include <sys/user.h>
23
24 #include <err.h>
25 #include <errno.h>
26 #include <event.h>
27 #include <stdint.h>
28 #include <stdlib.h>
29 #include <string.h>
30 #include <unistd.h>
31
32 struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *);
33 char *osdep_get_name(int, char *);
4ecaa511 »
2011-12-09 Import upstream snapshot from SVN r2647
34 char *osdep_get_cwd(pid_t);
b0169484 »
2011-10-03 Import upstream snapshot from SVN r2608
35 struct event_base *osdep_event_init(void);
36
37 #ifndef nitems
38 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
39 #endif
40
41 #define is_runnable(p) \
42 ((p)->kp_stat == SACTIVE || (p)->kp_stat == SIDL)
43 #define is_stopped(p) \
44 ((p)->kp_stat == SSTOP || (p)->kp_stat == SZOMB)
45
46 struct kinfo_proc *
47 cmp_procs(struct kinfo_proc *p1, struct kinfo_proc *p2)
48 {
49 if (is_runnable(p1) && !is_runnable(p2))
50 return (p1);
51 if (!is_runnable(p1) && is_runnable(p2))
52 return (p2);
53
54 if (is_stopped(p1) && !is_stopped(p2))
55 return (p1);
56 if (!is_stopped(p1) && is_stopped(p2))
57 return (p2);
58
59 if (strcmp(p1->kp_comm, p2->kp_comm) < 0)
60 return (p1);
61 if (strcmp(p1->kp_comm, p2->kp_comm) > 0)
62 return (p2);
63
64 if (p1->kp_pid > p2->kp_pid)
65 return (p1);
66 return (p2);
67 }
68
69 char *
70 osdep_get_name(int fd, char *tty)
71 {
72 int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PGRP, 0 };
73 struct stat sb;
74 size_t len;
75 struct kinfo_proc *buf, *newbuf, *bestp;
76 u_int i;
77 char *name;
78
79 buf = NULL;
80
81 if (stat(tty, &sb) == -1)
82 return (NULL);
83 if ((mib[3] = tcgetpgrp(fd)) == -1)
84 return (NULL);
85
86 retry:
87 if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) == -1)
88 return (NULL);
89 len = (len * 5) / 4;
90
91 if ((newbuf = realloc(buf, len)) == NULL)
92 goto error;
93 buf = newbuf;
94
95 if (sysctl(mib, nitems(mib), buf, &len, NULL, 0) == -1) {
96 if (errno == ENOMEM)
97 goto retry;
98 goto error;
99 }
100
101 bestp = NULL;
102 for (i = 0; i < len / sizeof (struct kinfo_proc); i++) {
103 if (buf[i].kp_tdev != sb.st_rdev)
104 continue;
105 if (bestp == NULL)
106 bestp = &buf[i];
107 else
108 bestp = cmp_procs(&buf[i], bestp);
109 }
110
111 name = NULL;
112 if (bestp != NULL)
113 name = strdup(bestp->kp_comm);
114
115 free(buf);
116 return (name);
117
118 error:
119 free(buf);
120 return (NULL);
121 }
122
4ecaa511 »
2011-12-09 Import upstream snapshot from SVN r2647
123 char *
124 osdep_get_cwd(pid_t pid)
125 {
126 return (NULL);
127 }
128
b0169484 »
2011-10-03 Import upstream snapshot from SVN r2608
129 struct event_base *
130 osdep_event_init(void)
131 {
132 return (event_init());
133 }
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