+++ /dev/null
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <signal.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <string.h>
-#include <limits.h>
-#include <getopt.h>
-#include <sys/file.h>
-
-#define failf(name) do { fprintf(stderr,"%s: ",pname); perror(name"()"); exit(EXIT_FAILURE); } while (0)
-const char version[]="This is FLock, version 1.0\n";
-
-int verbose;
-
-char *pname;
-
-static void usage(void) __attribute__((noreturn));
-static void usage(void)
-{
- fprintf(stderr,"\
-%s\
-This command acts as an interface to flock(2):\n\
-\n\
-Usage: flock [{-s|--shared}|{-x|--exclusive}] [-n|--nonblock]\n\
- [-v|--verbose] [-h|--help] [-V|--version]\n\
- <lockname> <command>\n\
-\n\
- -s, --shared\tCreate shared lock (LOCK_SH) - DEFAULT\n\
- -x, --exclusive\tCreate exclusive lock (LOCK_EX)\n\
- -n, --nonblock\tFail immediately if req. lock is busy\n\
- -v, --verbose\tDisplay progress during locking\n\
- -h, --help\tPrint a summary of the options\n\
- -V, --version\tPrint the version number\n\
-",version);
- exit(EXIT_FAILURE);
-}
-
-const struct option longopts[]={
-{"shared" ,0,0,'s'},
-{"exclusive",0,0,'x'},
-{"nonblock" ,0,0,'n'},
-{"verbose" ,0,0,'v'},
-{"help" ,0,0,'h'},
-{"version" ,0,0,'V'}};
-
-int main(int argc,char **argv)
-{
-char *fn,*cmd;
-int locktype=LOCK_SH,nonblock=0,fd,optc;
-
- pname=*argv;
- while ((optc=getopt_long(argc,argv,"sxnvhV",longopts,NULL))!=EOF) switch (optc) {
- case 's':
- locktype=LOCK_SH;
- break;
- case 'x':
- locktype=LOCK_EX;
- break;
- case 'n':
- nonblock=LOCK_NB;
- break;
- case 'v':
- verbose=1;
- break;
- case 'V':
- fprintf(stderr,version);
- exit(EXIT_FAILURE);
- default: /* also 'h' */
- usage();
- break;
- }
- if (optind+2!=argc) {
- fprintf(stderr,"%s: Incorrect number of parameters (command needs quoting?)!\n",pname);
- exit(EXIT_FAILURE);
- }
- fn=argv[optind];
- cmd=argv[optind+1];
- if (verbose) { fprintf(stderr,"%s: Opening \"%s\"...",pname,fn); fflush(stderr); }
- if ((fd=open(fn,O_RDONLY|(nonblock?O_NONBLOCK:0)))==-1) failf("open");
- if (verbose) { fprintf(stderr,"done\n%s: Locking \"%s\"...",pname,fn); fflush(stderr); }
- if (flock(fd,locktype|nonblock)) failf("flock");
- if (verbose) { fprintf(stderr,"done\n%s: Running \"%s\"...",pname,cmd); fflush(stderr); }
- if (system(cmd)==-1) failf("system");
- if (verbose) { fprintf(stderr,"done\n%s: Finishing - removing lock.\n",pname); }
- return(EXIT_SUCCESS);
-}