]> git.wh0rd.org - dump.git/blobdiff - restore/main.c
Do not add links several times in restore
[dump.git] / restore / main.c
index e1e9790ec9d499c76969e354f8dd49c4b9906d09..344ec5cacf0567ea5561991e30dbc4473e033a9d 100644 (file)
@@ -2,8 +2,7 @@
  *     Ported to Linux's Second Extended File System as part of the
  *     dump and restore backup suit
  *     Remy Card <card@Linux.EU.Org>, 1994-1997
- *      Stelian Pop <pop@cybercable.fr>, 1999 
- *
+ *     Stelian Pop <pop@cybercable.fr>, 1999-2000
  */
 
 /*
  */
 
 #ifndef lint
-static const char copyright[] =
-"@(#) Copyright (c) 1983, 1993\n\
-       The Regents of the University of California.  All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)main.c     8.6 (Berkeley) 5/4/95";
-#endif
 static const char rcsid[] =
-       "$Id: main.c,v 1.2 1999/10/11 12:53:23 stelian Exp $";
+       "$Id: main.c,v 1.12 2000/05/28 16:52:21 stelian Exp $";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -67,7 +57,7 @@ static const char rcsid[] =
 #endif /* __linux__ */
 #include <protocols/dumprestore.h>
 
-#include <err.h>
+#include <compaterr.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
@@ -95,9 +85,11 @@ ino_t        maxino;
 time_t dumptime;
 time_t dumpdate;
 FILE   *terminal;
+char   *tmpdir;
 int    compare_ignore_not_found;
-char   *filesys = NULL;
-char   *tmpdir = _PATH_TMP;
+int    compare_errors;
+char   filesys[NAMELEN];
+static const char *stdin_opt = NULL;
 
 #ifdef __linux__
 char   *__progname;
@@ -105,21 +97,22 @@ char       *__progname;
 
 static void obsolete __P((int *, char **[]));
 static void usage __P((void));
+static void use_stdin __P((const char *));
 
 int
-main(argc, argv)
-       int argc;
-       char *argv[];
+main(int argc, char *argv[])
 {
        int ch;
        ino_t ino;
-       char *inputdev;
+       char *inputdev = _PATH_DEFTAPE;
        char *symtbl = "./restoresymtable";
        char *p, name[MAXPATHLEN];
+       FILE *filelist = NULL;
+       char fname[MAXPATHLEN];
 
        /* Temp files should *not* be readable.  We set permissions later. */
        (void) umask(077);
-
+       filesys[0] = '\0';
 #ifdef __linux__
        __progname = argv[0];
 #endif
@@ -129,11 +122,17 @@ main(argc, argv)
 
        if ((inputdev = getenv("TAPE")) == NULL)
                inputdev = _PATH_DEFTAPE;
+       if ((tmpdir = getenv("TMPDIR")) == NULL)
+               tmpdir = _PATH_TMP;
+       if ((tmpdir = strdup(tmpdir)) == NULL)
+               err(1, "malloc tmpdir");
+       for (p = tmpdir + strlen(tmpdir) - 1; p >= tmpdir && *p == '/'; p--)
+               ;                                                               
        obsolete(&argc, &argv);
 #ifdef KERBEROS
-#define        optlist "b:CcdDf:hikmNRrs:tTuvxy"
+#define        optlist "b:CcdD:f:hikmMNRrs:tT:uvxX:y"
 #else
-#define        optlist "b:CcdDf:himNRrs:tTuvxy"
+#define        optlist "b:CcdD:f:himMNRrs:tT:uvxX:y"
 #endif
        while ((ch = getopt(argc, argv, optlist)) != -1)
                switch(ch) {
@@ -150,7 +149,8 @@ main(argc, argv)
                        cvtflag = 1;
                        break;
                case 'D':
-                       filesys = optarg;
+                       strncpy(filesys, optarg, NAMELEN);
+                       filesys[NAMELEN - 1] = '\0';
                        break;
                case 'T':
                        tmpdir = optarg;
@@ -159,6 +159,8 @@ main(argc, argv)
                        dflag = 1;
                        break;
                case 'f':
+                       if( !strcmp(optarg,"-") )
+                               use_stdin("-f");
                        inputdev = optarg;
                        break;
                case 'h':
@@ -184,6 +186,9 @@ main(argc, argv)
                case 'm':
                        mflag = 0;
                        break;
+               case 'M':
+                       Mflag = 1;
+                       break;
                case 'N':
                        Nflag = 1;
                        break;
@@ -201,6 +206,15 @@ main(argc, argv)
                case 'v':
                        vflag = 1;
                        break;
+               case 'X':
+                       if( !strcmp(optarg,"-") ) {
+                               use_stdin("-X");
+                               filelist = stdin;
+                       }
+                       else
+                               if ( !(filelist = fopen(optarg,"r")) )
+                                       errx(1, "can't open file for reading -- %s", optarg);
+                       break;
                case 'y':
                        yflag = 1;
                        break;
@@ -219,9 +233,11 @@ main(argc, argv)
                (void) signal(SIGTERM, SIG_IGN);
        setlinebuf(stderr);
 
+       atexit(cleanup);
+
        setinput(inputdev);
 
-       if (argc == 0) {
+       if (argc == 0 && !filelist) {
                argc = 1;
                *--argv = ".";
        }
@@ -233,27 +249,25 @@ main(argc, argv)
        case 'C': {
                struct stat stbuf;
 
-               vprintf(stdout, "Begin compare restore\n");
+               Vprintf(stdout, "Begin compare restore\n");
                compare_ignore_not_found = 0;
+               compare_errors = 0;
                setup();
                printf("filesys = %s\n", filesys);
-               if (stat(filesys, &stbuf) < 0) {
-                       fprintf(stderr, "cannot stat directory %s: %s\n",
-                               filesys, strerror(errno));
-                       exit(1);
-               } else {
-                       if (chdir(filesys) < 0) {
-                               fprintf(stderr, "cannot cd to %s: %s\n",
-                                       filesys, strerror(errno));
-                               exit(1);
-                       }
-               }
+               if (stat(filesys, &stbuf) < 0)
+                       err(1, "cannot stat directory %s", filesys);
+               if (chdir(filesys) < 0)
+                       err(1, "cannot cd to %s", filesys);
                compare_ignore_not_found = dumptime > 0;
                initsymtable((char *)0);
                extractdirs(0);
                treescan(".", ROOTINO, nodeupdates);
                compareleaves();
                checkrestore();
+               if (compare_errors) {
+                       printf("Some files were modified!\n");
+                       exit(2);
+               }
                break;
        }
 
@@ -275,11 +289,11 @@ main(argc, argv)
                        /*
                         * This is an incremental dump tape.
                         */
-                       vprintf(stdout, "Begin incremental restore\n");
+                       Vprintf(stdout, "Begin incremental restore\n");
                        initsymtable(symtbl);
                        extractdirs(1);
                        removeoldleaves();
-                       vprintf(stdout, "Calculate node updates.\n");
+                       Vprintf(stdout, "Calculate node updates.\n");
                        treescan(".", ROOTINO, nodeupdates);
                        findunreflinks();
                        removeoldnodes();
@@ -287,10 +301,10 @@ main(argc, argv)
                        /*
                         * This is a level zero dump tape.
                         */
-                       vprintf(stdout, "Begin level 0 restore\n");
+                       Vprintf(stdout, "Begin level 0 restore\n");
                        initsymtable((char *)0);
                        extractdirs(1);
-                       vprintf(stdout, "Calculate extraction list.\n");
+                       Vprintf(stdout, "Calculate extraction list.\n");
                        treescan(".", ROOTINO, nodeupdates);
                }
                createleaves(symtbl);
@@ -298,7 +312,7 @@ main(argc, argv)
                setdirmodes(FORCE);
                checkrestore();
                if (dflag) {
-                       vprintf(stdout, "Verify the directory structure\n");
+                       Vprintf(stdout, "Verify the directory structure\n");
                        treescan(".", ROOTINO, verifyfile);
                }
                dumpsymtable(symtbl, (long)1);
@@ -316,6 +330,23 @@ main(argc, argv)
                checkrestore();
                dumpsymtable(symtbl, (long)1);
                break;
+       
+/* handle file names from either text file (-X) or the command line */
+#define NEXTFILE(p) \
+       p = NULL; \
+       if (argc) { \
+               --argc; \
+               p = *argv++; \
+       } \
+       else if (filelist) { \
+               if ((p = fgets(fname, MAXPATHLEN, filelist))) { \
+                       if ( *p && *(p + strlen(p) - 1) == '\n' ) /* possible null string */ \
+                               *(p + strlen(p) - 1) = '\0'; \
+                       if ( !*p ) /* skip empty lines */ \
+                               continue; \
+                       } \
+       }
+       
        /*
         * List contents of tape.
         */
@@ -323,8 +354,11 @@ main(argc, argv)
                setup();
                extractdirs(0);
                initsymtable((char *)0);
-               while (argc--) {
-                       canon(*argv++, name, sizeof(name));
+               for (;;) {
+                       NEXTFILE(p);
+                       if (!p)
+                               break;
+                       canon(p, name, sizeof(name));
                        ino = dirlookup(name);
                        if (ino == 0)
                                continue;
@@ -338,8 +372,11 @@ main(argc, argv)
                setup();
                extractdirs(1);
                initsymtable((char *)0);
-               while (argc--) {
-                       canon(*argv++, name, sizeof(name));
+               for (;;) {
+                       NEXTFILE(p);
+                       if (!p)
+                               break;
+                       canon(p, name, sizeof(name));
                        ino = dirlookup(name);
                        if (ino == 0)
                                continue;
@@ -354,21 +391,29 @@ main(argc, argv)
                        checkrestore();
                break;
        }
-       done(0);
+       exit(0);
        /* NOTREACHED */
-       exit(1);        /* gcc shut up */
+       return 0;       /* gcc shut up */
 }
 
 static void
-usage()
+usage(void)
 {
-       (void)fprintf(stderr, "usage:\t%s\n\t%s\n\t%s\n\t%s\n\t%s\n",
-         "restore -i [-chkmuvy] [-b blocksize] [-f file] [-s fileno]",
-         "restore -r [-ckuvy] [-b blocksize] [-f file] [-s fileno]",
-         "restore -R [-ckuvy] [-b blocksize] [-f file] [-s fileno]",
-         "restore -x [-chkmuvy] [-b blocksize] [-f file] [-s fileno] [file ...]",
-         "restore -t [-chkuvy] [-b blocksize] [-f file] [-s fileno] [file ...]");
-       done(1);
+#ifdef KERBEROS
+#define kerbflag "k"
+#else
+#define kerbflag
+#endif
+       (void)fprintf(stderr, 
+         "%s %s\n", __progname, _DUMP_VERSION);
+       (void)fprintf(stderr,
+         "usage:\t%s%s\n\t%s%s\n\t%s%s\n\t%s%s\n\t%s%s\n",
+         __progname, " -i [-ch" kerbflag "mMuvy] [-b blocksize] [-f file] [-s fileno]",
+         __progname, " -r [-c" kerbflag "Muvy] [-b blocksize] [-f file] [-s fileno]",
+         __progname, " -R [-c" kerbflag "Muvy] [-b blocksize] [-f file] [-s fileno]",
+         __progname, " -x [-ch" kerbflag "mMuvy] [-b blocksize] [-f file] [-s fileno] [-X filelist] [file ...]",
+         __progname, " -t [-ch" kerbflag "Muvy] [-b blocksize] [-f file] [-s fileno] [-X filelist] [file ...]");
+       exit(1);
 }
 
 /*
@@ -377,12 +422,10 @@ usage()
  *     getopt(3) will like.
  */
 static void
-obsolete(argcp, argvp)
-       int *argcp;
-       char **argvp[];
+obsolete(int *argcp, char **argvp[])
 {
        int argc, flags;
-       char *ap, **argv, *flagsp=NULL, **nargv, *p=NULL;
+       char *ap, **argv, *flagsp = NULL, **nargv, *p = NULL;
 
        /* Setup. */
        argv = *argvp;
@@ -396,7 +439,7 @@ obsolete(argcp, argvp)
        /* Allocate space for new arguments. */
        if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
            (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
-               err(1, NULL);
+               err(1, "malloc args");
 
        *nargv++ = *argv;
        argv += 2, argc -= 2;
@@ -404,14 +447,17 @@ obsolete(argcp, argvp)
        for (flags = 0; *ap; ++ap) {
                switch (*ap) {
                case 'b':
+               case 'D':
                case 'f':
                case 's':
+               case 'T':
+               case 'X':
                        if (*argv == NULL) {
                                warnx("option requires an argument -- %c", *ap);
                                usage();
                        }
                        if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
-                               err(1, NULL);
+                               err(1, "malloc arg");
                        nargv[0][0] = '-';
                        nargv[0][1] = *ap;
                        (void)strcpy(&nargv[0][2], *argv);
@@ -440,3 +486,16 @@ obsolete(argcp, argvp)
        /* Update argument count. */
        *argcp = nargv - *argvp - 1;
 }
+
+/*
+ * use_stdin --
+ *     reserve stdin for opt (avoid conflicts)
+ */
+void
+use_stdin(const char *opt)
+{
+       if (stdin_opt)
+               errx(1, "can't handle standard input for both %s and %s",
+                       stdin_opt, opt);
+       stdin_opt = opt;
+}