/* source: filan_main.c */ /* Copyright Gerhard Rieger 2001-2006 */ /* Published under the GNU General Public License V.2, see file COPYING */ const char copyright[] = "filan by Gerhard Rieger - see http://www.dest-unreach.org/socat/"; #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, *waittimetxt; unsigned int m = 0, n = 1024; /* this is default on my Linux */ unsigned int i; int style = 0; struct timespec waittime = { 0, 0 }; FILE *fdout = stdout; const char *outfname = NULL; unsigned long fildes; 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 '?': case 'h': filan_usage(stdout); exit(0); #endif #if LATER case 'V': filan_version(stdout); exit(0); #endif case 'L': filan_followsymlinks = true; break; case 'd': diag_set('d', NULL); break; case 's': style = 1; break; case 'r': filan_rawoutput = true; 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 'T': if (arg1[0][2]) { waittimetxt = *arg1+2; } else { ++arg1, --argc; if ((waittimetxt = *arg1) == NULL) { Error("option -T requires an argument"); filan_usage(stderr); exit(1); } } { double waittimedbl; waittimedbl = strtod(waittimetxt, NULL); waittime.tv_sec = waittimedbl; waittime.tv_nsec = (waittimedbl-waittime.tv_sec) * 1000000000; } break; case 'o': if (arg1[0][2]) { outfname = *arg1+2; } else { ++arg1, --argc; if ((outfname = *arg1) == NULL) { Error("option -o requires an argument"); filan_usage(stderr); exit(1); } } break; case '\0': break; default: diag_set_int('e', E_FATAL); 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 (outfname) { // special cases if (!strcmp(outfname,"stdin")) { fdout=stdin; } else if (!strcmp(outfname,"stdout")) { fdout=stdout; } else if (!strcmp(outfname,"stderr")) { fdout=stderr; } // file descriptor else if (*outfname == '+') { a = outfname+1; fildes = strtoul(a, (char **)&a, 0); if ((fdout = fdopen(fildes, "w")) == NULL) { Error2("can't fdopen file descriptor %lu: %s\n", fildes, strerror(errno)); exit(1); } } else { // file name if ((fdout = fopen(outfname, "w")) == NULL) { Error2("can't fopen '%s': %s\n", outfname, strerror(errno)); exit(1); } } } Nanosleep(&waittime, NULL); if (style == 0) { /* this style gives detailled infos, but requires a file descriptor */ if (filename) { #if LATER /* this is just in case that S_ISSOCK does not work */ 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"); } #endif filan_file(filename, fdout); } else { for (i = m; i < n; ++i) { filan_fd(i, fdout); } } } 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 */ #if LATER 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, fdout); #endif fdname(filename, -1, fdout); } else { for (i = m; i < n; ++i) { fdname("", i, fdout); } } } if (outfname && fdout != stdout && fdout != stderr) { fclose(fdout); } 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(" -?|-h 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 log to file\n", fd); fputs(" -ls log to stderr (default if no other log)\n", fd); #endif fputs(" -i only analyze this fd\n", fd); fputs(" -n 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(" -c alternate device visualization\n", fd);*/ fputs(" -f analyze file system entry\n", fd); fputs(" -T wait before analyzing, useful to connect with debugger\n", fd); fputs(" -r raw output for time stamps and rdev\n", fd); fputs(" -L show symlink properties instead of following it\n", fd); fputs(" -o output goes to filename, that can be:\n", fd); fputs(" a regular file name, the output goes to that\n", fd); fputs(" + , output goes to the file descriptor (which must be open writable)\n", fd); fputs(" the 3 special names stdin stdout and stderr\n", fd); } #endif /* WITH_HELP */