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- /*
- * Copyright (c) 1992, Brian Berliner and Jeff Polk
- * Copyright (c) 1989-1992, Brian Berliner
- *
- * You may distribute under the terms of the GNU General Public License as
- * specified in the README file that comes with the CVS 1.3 kit.
- *
- * mkmodules
- *
- * Re-build the modules database for the CVS system. Accepts one argument,
- * which is the directory that the modules,v file lives in.
- */
-
- #include "cvs.h"
-
- #ifndef lint
- static char rcsid[] = "@(#)mkmodules.c 1.39 92/03/31";
- #endif
-
- #ifndef DBLKSIZ
- #define DBLKSIZ 4096 /* since GNU ndbm doesn't define it */
- #endif
-
- char *program_name, *command_name;
-
- char *Rcsbin = RCSBIN_DFLT;
- int noexec = 0; /* Here only to satisfy use in subr.c */
- int trace = 0; /* Here only to satisfy use in subr.c */
-
- #if __STDC__
- static int checkout_file (char *file, char *temp);
- static void make_tempfile (char *temp);
- static void mkmodules_usage (void);
- static void rename_rcsfile (char *temp, char *real);
-
- #ifndef MY_NDBM
- static void rename_dbmfile (char *temp);
- static void write_dbmfile (char *temp);
- #endif /* !MY_NDBM */
-
- #else /* !__STDC__ */
-
- static void make_tempfile ();
- static int checkout_file ();
- static void rename_rcsfile ();
- static void mkmodules_usage ();
-
- #ifndef MY_NDBM
- static void write_dbmfile ();
- static void rename_dbmfile ();
- #endif /* !MY_NDBM */
-
- #endif /* __STDC__ */
-
- int
- main (argc, argv)
- int argc;
- char *argv[];
- {
- extern char *getenv ();
- char temp[PATH_MAX];
- char *cp;
- #ifdef MY_NDBM
- DBM *db;
- #endif
-
- /*
- * Just save the last component of the path for error messages
- */
- if ((program_name = rindex (argv[0], '/')) == NULL)
- program_name = argv[0];
- else
- program_name++;
-
- if (argc != 2)
- mkmodules_usage ();
-
- if ((cp = getenv (RCSBIN_ENV)) != NULL)
- Rcsbin = cp;
-
- /*
- * If Rcsbin is set to something, make sure it is terminated with a slash
- * character. If not, add one.
- */
- if (Rcsbin[0] != '\0')
- {
- int len = strlen (Rcsbin);
- char *rcsbin;
-
- if (Rcsbin[len - 1] != '/')
- {
- rcsbin = Rcsbin;
- Rcsbin = xmalloc (len + 2); /* one for '/', one for NULL */
- (void) strcpy (Rcsbin, rcsbin);
- (void) strcat (Rcsbin, "/");
- }
- }
-
- if (chdir (argv[1]) < 0)
- error (1, errno, "cannot chdir to %s", argv[1]);
-
- /*
- * First, do the work necessary to update the "modules" database.
- */
- make_tempfile (temp);
- switch (checkout_file (CVSROOTADM_MODULES, temp))
- {
-
- case 0: /* everything ok */
- #ifdef MY_NDBM
- /* open it, to generate any duplicate errors */
- if ((db = dbm_open (temp, O_RDONLY, 0666)) != NULL)
- dbm_close (db);
- #else
- write_dbmfile (temp);
- rename_dbmfile (temp);
- #endif
- rename_rcsfile (temp, CVSROOTADM_MODULES);
- break;
-
- case -1: /* fork failed */
- (void) unlink_file (temp);
- exit (1);
- /* NOTREACHED */
-
- default:
- error (0, 0,
- "'cvs checkout' is less functional without a %s file",
- CVSROOTADM_MODULES);
- break;
- } /* switch on checkout_file() */
-
- (void) unlink_file (temp);
-
- /*
- * Now, check out the "loginfo" file, so that it is always up-to-date in
- * the CVSROOT directory.
- */
- make_tempfile (temp);
- if (checkout_file (CVSROOTADM_LOGINFO, temp) == 0)
- rename_rcsfile (temp, CVSROOTADM_LOGINFO);
- else
- error (0, 0,
- "no logging of 'cvs commit' messages is done without a %s file",
- CVSROOTADM_LOGINFO);
- (void) unlink_file (temp);
-
- /*
- * Now, check out the "rcsinfo" file, so that it is always up-to-date in
- * the CVSROOT directory.
- */
- make_tempfile (temp);
- if (checkout_file (CVSROOTADM_RCSINFO, temp) == 0)
- rename_rcsfile (temp, CVSROOTADM_RCSINFO);
- else
- error (0, 0,
- "a %s file can be used to configure 'cvs commit' templates",
- CVSROOTADM_RCSINFO);
- (void) unlink_file (temp);
-
- /*
- * Now, check out the "editinfo" file, so that it is always up-to-date in
- * the CVSROOT directory.
- */
- make_tempfile (temp);
- if (checkout_file (CVSROOTADM_EDITINFO, temp) == 0)
- rename_rcsfile (temp, CVSROOTADM_EDITINFO);
- else
- error (0, 0,
- "a %s file can be used to validate log messages",
- CVSROOTADM_EDITINFO);
- (void) unlink_file (temp);
-
- /*
- * Now, check out the "commitinfo" file, so that it is always up-to-date
- * in the CVSROOT directory.
- */
- make_tempfile (temp);
- if (checkout_file (CVSROOTADM_COMMITINFO, temp) == 0)
- rename_rcsfile (temp, CVSROOTADM_COMMITINFO);
- else
- error (0, 0,
- "a %s file can be used to configure 'cvs commit' checking",
- CVSROOTADM_COMMITINFO);
- (void) unlink_file (temp);
- return (0);
- }
-
- /*
- * Yeah, I know, there are NFS race conditions here.
- */
- static void
- make_tempfile (temp)
- char *temp;
- {
- static int seed = 0;
- int fd;
-
- if (seed == 0)
- seed = getpid ();
- while (1)
- {
- (void) sprintf (temp, "%s%d", BAKPREFIX, seed++);
- if ((fd = open (temp, O_CREAT|O_EXCL|O_RDWR, 0666)) != -1)
- break;
- if (errno != EEXIST)
- error (1, errno, "cannot create temporary file %s", temp);
- }
- if (close(fd) < 0)
- error(1, errno, "cannot close temporary file %s", temp);
- }
-
- static int
- checkout_file (file, temp)
- char *file;
- char *temp;
- {
- char rcs[PATH_MAX];
- int retcode = 0;
-
- (void) sprintf (rcs, "%s%s", file, RCSEXT);
- if (!isfile (rcs))
- return (1);
- run_setup ("%s%s -q -p", Rcsbin, RCS_CO);
- run_arg (rcs);
- if ((retcode = run_exec (RUN_TTY, temp, RUN_TTY, RUN_NORMAL)) != 0)
- {
- error (0, retcode == -1 ? errno : 0, "failed to check out %s file", file);
- }
- return (retcode);
- }
-
- #ifndef MY_NDBM
-
- static void
- write_dbmfile (temp)
- char *temp;
- {
- char line[DBLKSIZ], value[DBLKSIZ];
- FILE *fp;
- DBM *db;
- char *cp, *vp;
- datum key, val;
- int len, cont, err = 0;
-
- fp = open_file (temp, "r");
- if ((db = dbm_open (temp, O_RDWR | O_CREAT | O_TRUNC, 0666)) == NULL)
- error (1, errno, "cannot open dbm file %s for creation", temp);
- for (cont = 0; fgets (line, sizeof (line), fp) != NULL;)
- {
- if ((cp = rindex (line, '\n')) != NULL)
- *cp = '\0'; /* strip the newline */
-
- /*
- * Add the line to the value, at the end if this is a continuation
- * line; otherwise at the beginning, but only after any trailing
- * backslash is removed.
- */
- vp = value;
- if (cont)
- vp += strlen (value);
-
- /*
- * See if the line we read is a continuation line, and strip the
- * backslash if so.
- */
- len = strlen (line);
- if (len > 0)
- cp = &line[len - 1];
- else
- cp = line;
- if (*cp == '\\')
- {
- cont = 1;
- *cp = '\0';
- }
- else
- {
- cont = 0;
- }
- (void) strcpy (vp, line);
- if (value[0] == '#')
- continue; /* comment line */
- vp = value;
- while (*vp && isspace (*vp))
- vp++;
- if (*vp == '\0')
- continue; /* empty line */
-
- /*
- * If this was not a continuation line, add the entry to the database
- */
- if (!cont)
- {
- key.dptr = vp;
- while (*vp && !isspace (*vp))
- vp++;
- key.dsize = vp - key.dptr;
- *vp++ = '\0'; /* NULL terminate the key */
- while (*vp && isspace (*vp))
- vp++; /* skip whitespace to value */
- if (*vp == '\0')
- {
- error (0, 0, "warning: NULL value for key `%s'", key.dptr);
- continue;
- }
- val.dptr = vp;
- val.dsize = strlen (vp);
- if (dbm_store (db, key, val, DBM_INSERT) == 1)
- {
- error (0, 0, "duplicate key found for `%s'", key.dptr);
- err++;
- }
- }
- }
- dbm_close (db);
- (void) fclose (fp);
- if (err)
- {
- char dotdir[50], dotpag[50];
-
- (void) sprintf (dotdir, "%s.dir", temp);
- (void) sprintf (dotpag, "%s.pag", temp);
- (void) unlink_file (dotdir);
- (void) unlink_file (dotpag);
- error (1, 0, "DBM creation failed; correct above errors");
- }
- }
-
- static void
- rename_dbmfile (temp)
- char *temp;
- {
- char newdir[50], newpag[50];
- char dotdir[50], dotpag[50];
- char bakdir[50], bakpag[50];
-
- (void) sprintf (dotdir, "%s.dir", CVSROOTADM_MODULES);
- (void) sprintf (dotpag, "%s.pag", CVSROOTADM_MODULES);
- (void) sprintf (bakdir, "%s%s.dir", BAKPREFIX, CVSROOTADM_MODULES);
- (void) sprintf (bakpag, "%s%s.pag", BAKPREFIX, CVSROOTADM_MODULES);
- (void) sprintf (newdir, "%s.dir", temp);
- (void) sprintf (newpag, "%s.pag", temp);
-
- (void) chmod (newdir, 0666);
- (void) chmod (newpag, 0666);
-
- /* don't mess with me */
- SIG_beginCrSect ();
-
- (void) unlink_file (bakdir); /* rm .#modules.dir .#modules.pag */
- (void) unlink_file (bakpag);
- (void) rename (dotdir, bakdir); /* mv modules.dir .#modules.dir */
- (void) rename (dotpag, bakpag); /* mv modules.pag .#modules.pag */
- (void) rename (newdir, dotdir); /* mv "temp".dir modules.dir */
- (void) rename (newpag, dotpag); /* mv "temp".pag modules.pag */
-
- /* OK -- make my day */
- SIG_endCrSect ();
- }
-
- #endif /* !MY_NDBM */
-
- static void
- rename_rcsfile (temp, real)
- char *temp;
- char *real;
- {
- char bak[50];
-
- if (chmod (temp, 0444) < 0) /* chmod 444 "temp" */
- error (0, errno, "warning: cannot chmod %s", temp);
- (void) sprintf (bak, "%s%s", BAKPREFIX, real);
- (void) unlink_file (bak); /* rm .#loginfo */
- (void) rename (real, bak); /* mv loginfo .#loginfo */
- (void) rename (temp, real); /* mv "temp" loginfo */
- }
-
- /*
- * For error() only
- */
- void
- Lock_Cleanup ()
- {
- }
-
- static void
- mkmodules_usage ()
- {
- (void) fprintf (stderr, "Usage: %s modules-directory\n", program_name);
- exit (1);
- }
-