1 #ifndef _NO_GETUT
2
3 #include <stdlib.h>
4 #include <string.h>
5 #include <fcntl.h>
6 #include <unistd.h>
7 #include <utmp.h>
8 #include <_syslist.h>
9 #include <_ansi.h>
10
11 static int utmp_fd = -2;
12 static char *utmp_file = UTMP_FILE;
13
14 static struct utmp utmp_data;
15
16 void
setutent()17 setutent ()
18 {
19 if (utmp_fd == -2)
20 {
21 utmp_fd = open (utmp_file, O_RDONLY);
22 }
23 lseek (utmp_fd, 0, SEEK_SET);
24 }
25
26 void
endutent()27 endutent ()
28 {
29 close (utmp_fd);
30 utmp_fd = -2;
31 }
32
33 void
utmpname(_CONST char * file)34 utmpname (_CONST char *file)
35 {
36 utmp_file = strdup (file);
37 }
38
39 struct utmp *
getutent()40 getutent ()
41 {
42 if (utmp_fd == -2)
43 setutent ();
44 if (read (utmp_fd, &utmp_data, sizeof (utmp_data)) < sizeof (utmp_data))
45 return 0;
46 return &utmp_data;
47 }
48
49 struct utmp *
getutid(struct utmp * id)50 getutid (struct utmp *id)
51 {
52 while (read (utmp_fd, &utmp_data, sizeof (utmp_data)) == sizeof (utmp_data))
53 {
54 switch (id->ut_type)
55 {
56 case RUN_LVL:
57 case BOOT_TIME:
58 case OLD_TIME:
59 case NEW_TIME:
60 if (id->ut_type == utmp_data.ut_type)
61 return &utmp_data;
62 case INIT_PROCESS:
63 case LOGIN_PROCESS:
64 case USER_PROCESS:
65 case DEAD_PROCESS:
66 if (id->ut_id == utmp_data.ut_id)
67 return &utmp_data;
68 default:
69 abort ();
70 }
71 }
72 return 0;
73 }
74
75 struct utmp *
getutline(struct utmp * line)76 getutline (struct utmp *line)
77 {
78 while (read (utmp_fd, &utmp_data, sizeof (utmp_data)) == sizeof (utmp_data))
79 {
80 if ((utmp_data.ut_type == LOGIN_PROCESS ||
81 utmp_data.ut_type == USER_PROCESS) &&
82 !strncmp (utmp_data.ut_line, line->ut_line,
83 sizeof (utmp_data.ut_line)))
84 return &utmp_data;
85 }
86
87 return 0;
88 }
89
90 #endif /* !_NO_GETUT */
91