Testsuite: fakens/inet_pton on solaris again
[exim.git] / test / src / fd.c
CommitLineData
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1/* A program to check on open file descriptors. There are some weird options
2for running it in Exim testing. If -q is given, make output suitable for
3queryprogram. If -f is given, copy the input as for a transport filter. If -s
4is given, add extra output from stat(). */
5
6#include <stdio.h>
7#include <stdlib.h>
8#include <string.h>
9#include <sys/types.h>
10#include <fcntl.h>
11#include <limits.h>
12#include <errno.h>
13#include <sys/stat.h>
14#include <unistd.h>
15
16
17/* The way of finding out the maximum file descriptor various between OS.
18Most have sysconf(), but a few don't. */
19
20#ifdef _SC_OPEN_MAX
21 #define mac_maxfd (sysconf(_SC_OPEN_MAX) - 1)
22#elif defined OPEN_MAX
23 #define mac_maxfd (OPEN_MAX - 1)
24#elif defined NOFILE
25 #define mac_maxfd (NOFILE - 1)
26#else
27 #define mac_maxfd 255; /* just in case */
28#endif
29
30
31int main(int argc, char **argv)
32{
33int fd;
34int qpgm = 0;
35int filter = 0;
36int use_stat = 0;
37struct stat statbuf;
38char buffer[8192];
39char *p = buffer;
40
41while (argc > 1)
42 {
43 char *arg = argv[--argc];
44 if (strcmp(arg, "-q") == 0) qpgm = 1;
45 if (strcmp(arg, "-f") == 0) filter = 1;
46 if (strcmp(arg, "-s") == 0) use_stat = 1;
47 }
48
49if (filter)
50 {
51 int len;
52 while ((len = read(0, buffer, sizeof(buffer))) > 0)
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53 if (write(1, buffer, len) < 0)
54 exit(1);
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55 }
56
57p += sprintf(p, "max fd = %d\n", (int)mac_maxfd);
58
59for (fd = 0; fd <= mac_maxfd; fd++)
60 {
61 int options = fcntl(fd, F_GETFD);
62 if (options >= 0)
63 {
64 int status = fcntl(fd, F_GETFL);
65 p += sprintf(p, "%3d opt=%d status=%X ", fd, options, status);
66 switch(status & 3)
67 {
68 case 0: p += sprintf(p, "RDONLY");
69 break;
70 case 1: p += sprintf(p, "WRONLY");
71 break;
72 case 2: p += sprintf(p, "RDWR");
73 break;
74 }
75 if (isatty(fd)) p += sprintf(p, " TTY");
76 if ((status & 8) != 0) p += sprintf(p, " APPEND");
77
78 if (use_stat && fstat(fd, &statbuf) >= 0)
79 {
80 p += sprintf(p, " mode=%o uid=%d size=%d", (int)statbuf.st_mode,
81 (int)statbuf.st_uid, (int)statbuf.st_size);
82 }
83
84 p += sprintf(p, "\n");
85 }
86 else if (errno != EBADF)
87 {
88 p += sprintf(p, "%3d errno=%d %s\n", fd, errno, strerror(errno));
89 }
90 }
91
92if (qpgm)
93 {
94 for (p = buffer; *p != 0; p++)
95 if (*p == '\n') *p = ' ';
96 printf("ACCEPT DATA=\"%s\"\n", buffer);
97 }
98else printf("%s", buffer);
99
100exit(0);
101}
102
103/* End */