date and time created 83/02/18 00:42:39 by mckusick

[unix-history] / usr / src / sbin / mount / mount.c

diff --git a/usr/src/sbin/mount/mount.c b/usr/src/sbin/mount/mount.c
index 8c3eac8..10657af 100644 (file)
--- a/usr/src/sbin/mount/mount.c
+++ b/usr/src/sbin/mount/mount.c
@@ -1,12 +1,13 @@
-static char *sccsid = "@(#)mount.c     4.4 (Berkeley) %G%";
-#include <stdio.h>
-#include <fstab.h>
+#ifndef lint
+static char *sccsid = "@(#)mount.c     4.8 (Berkeley) %G%";
+#endif

 
 /*
  * mount
  */
 
 /*
  * mount
  */

+#include <stdio.h>
+#include <fstab.h>

 
 

-int    mountall;

 #define        NMOUNT  16
 #define        NAMSIZ  32
 
 #define        NMOUNT  16
 #define        NAMSIZ  32
 


@@ -15,16 +16,19 @@ struct mtab {
        char    spec[NAMSIZ];
 } mtab[NMOUNT];
 
        char    spec[NAMSIZ];
 } mtab[NMOUNT];
 

+int    all;

 int    ro;
 int    fake;
 int    ro;
 int    fake;

+int    verbose;
+

 main(argc, argv)
 main(argc, argv)

-char **argv;
+       int argc;
+       char **argv;

 {
        register struct mtab *mp;
        register char *np;
        int mf;
 
 {
        register struct mtab *mp;
        register char *np;
        int mf;
 

-       mountall = 0;

        mf = open("/etc/mtab", 0);
        read(mf, (char *)mtab, NMOUNT*2*NAMSIZ);
        if (argc==1) {
        mf = open("/etc/mtab", 0);
        read(mf, (char *)mtab, NMOUNT*2*NAMSIZ);
        if (argc==1) {


@@ -33,107 +37,102 @@ char **argv;
                                printf("%s on %s\n", mp->spec, mp->file);
                exit(0);
        }
                                printf("%s on %s\n", mp->spec, mp->file);
                exit(0);
        }

-
-       if (argc == 2){
-               if (strcmp(argv[1], "-a") == 0)
-                       mountall++;
-               else {
-                       fprintf(stdout,"arg count\n");
-                       exit(1);
+top:
+       if (argc > 1) {
+               if (!strcmp(argv[1], "-a")) {
+                       all++;
+                       argc--, argv++;
+                       goto top;

                }
                }

-       }
-       if (!strcmp(argv[1], "-f"))
-               fake++, argc--, argv++;
-
-       if (!mountall){
-               ro = 0;
-               if(argc > 3)
+               if (!strcmp(argv[1], "-r")) {

                        ro++;
                        ro++;

-               if (mountfs(argv[1], argv[2], ro)){
-                       perror("mount");
-                       exit(1);
+                       argc--, argv++;
+                       goto top;
+               }
+               if (!strcmp(argv[1], "-f")) {
+                       fake++;
+                       argc--, argv++;
+                       goto top;

                }
                }

-       } else {
-               struct  fstab   *fsp;
+               if (!strcmp(argv[1], "-v")) {
+                       verbose++;
+                       argc--, argv++;
+                       goto top;
+               }
+       }
+       if (all) {
+               struct fstab *fsp;
+
+               if (argc > 1)
+                       goto argcnt;

                close(2); dup(1);
                if (setfsent() == 0)
                        perror(FSTAB), exit(1);
                close(2); dup(1);
                if (setfsent() == 0)
                        perror(FSTAB), exit(1);

-               while ( (fsp = getfsent()) != 0){
+               while ( (fsp = getfsent()) != 0) {

                        if (strcmp(fsp->fs_file, "/") == 0)
                                continue;
                        ro = !strcmp(fsp->fs_type, FSTAB_RO);
                        if (ro==0 && strcmp(fsp->fs_type, FSTAB_RW))
                                continue;
                        if (strcmp(fsp->fs_file, "/") == 0)
                                continue;
                        ro = !strcmp(fsp->fs_type, FSTAB_RO);
                        if (ro==0 && strcmp(fsp->fs_type, FSTAB_RW))
                                continue;

-                       if (mountfs(fsp->fs_spec, fsp->fs_file, ro))
-                               failed(fsp);
-                       else
-                               succeed(fsp);
+                       mountfs(fsp->fs_spec, fsp->fs_file, ro);

                }
                }

-               endfsent();
+               exit(0);

        }
        }

-       exit(0);
-}
-failed(fsp)
-       register        struct  fstab *fsp;
-{
-       extern int errno;
-       extern char *sys_errlist[];
-       int err = errno;
-       printf("Attempt to mount ");
-       location(fsp);
-       printf("FAILED: %s\n", sys_errlist[err]);
-}
-succeed(fsp)
-       register        struct  fstab *fsp;
-{
-       printf("Mounted ");
-       location(fsp);
-       printf("\n");
-}
-location(fsp)
-       register        struct  fstab *fsp;
-{
-       extern  int     ro;
-       printf("%s on %s %s ",
-               fsp->fs_file, fsp->fs_spec,
-               ro ? "(Read Only)" : "");
+       if (argc != 3) {
+argcnt:
+               fprintf(stderr,
+           "usage: mount [ -a ] [ -r ] [ -f ] [ -v ] [ special dir ]\n");
+               exit(1);
+       }
+       mountfs(argv[1], argv[2], ro);

 }
 
 mountfs(spec, name, ro)
 }
 
 mountfs(spec, name, ro)

-       char    *spec, *name;
-       int     ro;
+       char *spec, *name;

 {
 {

-       register        char    *np;
-       register        struct  mtab    *mp;
-       int     mf;
+       register char *np;
+       register struct mtab *mp;
+       int mf;

 
 

-       if(fake==0 && mount(spec, name, ro) < 0)
-               return(1);
+       if (fake==0) {
+               if (mount(spec, name, ro) < 0) {
+                       fprintf(stderr, "%s on ", spec);
+                       perror(name);
+                       return;
+               }
+       }
+       if (verbose)
+               fprintf(stderr, "%s on %s%s\n", spec, name,
+                   ro ? " read only" : "");

        np = spec;
        np = spec;

-       while(*np++)
+       while (*np++)

                ;
        np--;
                ;
        np--;

-       while(*--np == '/')
+       while (*--np == '/')

                *np = '\0';
                *np = '\0';

-       while(np > spec && *--np != '/')
+       while (np > spec && *--np != '/')

                ;
                ;

-       if(*np == '/')
+       if (*np == '/')

                np++;
        spec = np;
                np++;
        spec = np;

-       for (mp = mtab; mp < &mtab[NMOUNT]; mp++) {
-               if (mp->file[0] == 0) {
-                       for (np = mp->spec; np < &mp->spec[NAMSIZ-1];)
-                               if ((*np++ = *spec++) == 0)
-                                       spec--;
-                       for (np = mp->file; np < &mp->file[NAMSIZ-1];)
-                               if ((*np++ = *name++) == 0)
-                                       name--;
-                       mp = &mtab[NMOUNT];
-                       while ((--mp)->file[0] == 0);
-                       mf = creat("/etc/mtab", 0644);
-                       write(mf, (char *)mtab, (mp-mtab+1)*2*NAMSIZ);
-                       return(0);
-               }
-       }
-       return(0);
+       for (mp = mtab; mp < &mtab[NMOUNT]; mp++)
+               if (!strcmp(mp->spec, spec))
+                       goto replace;
+       for (mp = mtab; mp < &mtab[NMOUNT]; mp++)
+               if (mp->file[0] == 0)
+                       goto replace;
+       return;
+replace:
+       for (np = mp->spec; np < &mp->spec[NAMSIZ-1];)
+               if ((*np++ = *spec++) == 0)
+                       spec--;
+       for (np = mp->file; np < &mp->file[NAMSIZ-1];)
+               if ((*np++ = *name++) == 0)
+                       name--;
+       mp = &mtab[NMOUNT];
+       while ((--mp)->file[0] == 0);
+       mf = creat("/etc/mtab", 0644);
+       write(mf, (char *)mtab, (mp-mtab+1)*2*NAMSIZ);
+       close(mf);
+       return;

 }
 }