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/* $Id: filan_main.c,v 1.11 2003/06/26 12:03:40 gerhard Exp $ */
/* Copyright Gerhard Rieger 2001-2003 */
/* Published under the GNU General Public License V.2, see file COPYING */
const char copyright[] = "filan by Gerhard Rieger - send bug reports to socat@dest-unreach.org";
#include "config.h"
#include "xioconfig.h"
#include "sysincludes.h"
#include "mytypes.h"
#include "compat.h"
#include "error.h"
#include "sycls.h"
#include "filan.h"
#define WITH_HELP 1
static void filan_usage(FILE *fd);
int main(int argc, const char *argv[]) {
const char **arg1, *a;
const char *filename = NULL;
unsigned int m = 0, n = 1024; /* this is default on my Linux */
unsigned int i;
int style = 0;
diag_set('p', strchr(argv[0], '/') ? strrchr(argv[0], '/')+1 : argv[0]);
arg1 = argv+1; --argc;
while (arg1[0] && (arg1[0][0] == '-')) {
switch (arg1[0][1]) {
#if WITH_HELP
case '?': filan_usage(stdout); exit(0);
#endif
#if LATER
case 'V': filan_version(stdout); exit(0);
case 'l': diag_set(arg1[0][2], &arg1[0][3]); break;
#endif
case 'd': diag_set('d', NULL); break;
case 's': style = 1; break;
case 'i': if (arg1[0][2]) {
a = *arg1+2;
} else {
++arg1, --argc;
if ((a = *arg1) == NULL) {
Error("option -i requires an argument");
filan_usage(stderr); exit(1);
}
}
m = strtoul(a, (char **)&a, 0);
n = m+1;
break;
case 'n': if (arg1[0][2]) {
a = *arg1+2;
} else {
++arg1, --argc;
if ((a = *arg1) == NULL) {
Error("option -n requires an argument");
filan_usage(stderr); exit(1);
}
}
n = strtoul(a, (char **)&a, 0);
break;
case 'f': if (arg1[0][2]) {
filename = *arg1+2;
} else {
++arg1, --argc;
if ((filename = *arg1) == NULL) {
Error("option -f requires an argument");
filan_usage(stderr); exit(1);
}
}
break;
case '\0': break;
default:
{
char l[2];
l[0] = '0'+E_FATAL; l[1] = '\0';
diag_set('e', l);
Error1("unknown option %s", arg1[0]);
#if WITH_HELP
filan_usage(stderr);
#endif
}
exit(1);
}
#if 0
if (arg1[0][1] == '\0')
break;
#endif
++arg1; --argc;
}
if (argc != 0) {
Error1("%d superfluous arguments", argc);
filan_usage(stderr);
exit(1);
}
if (style == 0) {
/* this style gives detailled infos, but requires a file descriptor */
if (filename) {
struct stat buf;
int fd;
if (Stat(filename, &buf) < 0) {
Error3("stat(\"%s\", %p): %s", filename, &buf, strerror(errno));
}
/* note: when S_ISSOCK was undefined, it always gives 0 */
if (S_ISSOCK(buf.st_mode)) {
Error("cannot analyze UNIX domain socket");
}
if ((fd =
Open(filename, O_RDONLY|O_NOCTTY|O_NONBLOCK
#ifdef O_LARGEFILE
|O_LARGEFILE
#endif
, 0700))
< 0) {
Error2("open(\"%s\", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_LARGEFILE, 0700): %s",
filename, strerror(errno));
}
filan(fd, stdout);
} else {
for (i = m; i < n; ++i) {
filan(i, stdout);
}
}
} else {
/* this style gives only type and path / socket addresses, and works from
file descriptor or filename (with restrictions) */
if (filename) {
/* filename: NULL means yet unknown; "" means no name at all */
int fd;
if ((fd =
Open(filename, O_RDONLY|O_NOCTTY|O_NONBLOCK
#ifdef O_LARGEFILE
|O_LARGEFILE
#endif
, 0700))
< 0) {
Debug2("open(\"%s\", O_RDONLY|O_NOCTTY|O_NONBLOCK|O_LARGEFILE, 0700): %s",
filename, strerror(errno));
}
fdname(filename, fd, stdout);
} else {
for (i = m; i < n; ++i) {
fdname("", i, stdout);
}
}
}
return 0;
}
#if WITH_HELP
static void filan_usage(FILE *fd) {
fputs(copyright, fd); fputc('\n', fd);
fputs("Analyze file descriptors of the process\n", fd);
fputs("Usage:\n", fd);
fputs("filan [options]\n", fd);
fputs(" options:\n", fd);
#if LATER
fputs(" -V print version information to stdout, and exit\n", fd);
#endif
#if WITH_HELP
fputs(" -? print this help text\n", fd);
fputs(" -d increase verbosity (use up to 4 times)\n", fd);
#endif
#if 0
fputs(" -ly[facility] log to syslog, using facility (default is daemon)\n", fd);
fputs(" -lf<logfile> log to file\n", fd);
fputs(" -ls log to stderr (default if no other log)\n", fd);
#endif
fputs(" -i<fdnum> only analyze this fd\n", fd);
fputs(" -n<fdnum> analyze all fds from 0 up to fdnum-1 (default: 1024)\n", fd);
fputs(" -s simple output with just type and socket address or path\n", fd);
fputs(" -f<filename> analyze file system entry\n", fd);
}
#endif /* WITH_HELP */
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