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mkfs: symlink support

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. mkproto too
This commit is contained in:
Ben Gras 2012-11-07 11:06:56 +01:00
parent cf6fa5ad92
commit 253b6e965c
3 changed files with 34 additions and 5 deletions
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4
man/man1/mkfs.mfs.1
View file

@ -89,8 +89,8 @@ The first entry on each line (except the first 3 and the $ lines, which
terminate directories) is the name the file or directory will get on the
new file system.
Next comes its mode, with the first character being
\fB\-dbc\fR for regular files, directories, block special files and character
special files, respectively.
\fB\-dbcs\fR for regular files, directories, block special files and character
special files, symlinks, respectively.
The next two characters are used to specify the SETUID and SETGID bits, as
shown above.
The last three characters of the mode are the

22
usr.sbin/mkfs.mfs/mkfs.c
View file

@ -479,6 +479,8 @@ void sizeup_dir()
sizeup_dir();
} else if (*p == 'b' || *p == 'c') {
} else if (*p == 's') {
zonecount++; /* Symlink contents is always stored a block */
} else {
if ((f = fopen(token[4], "r")) == NULL) {
fprintf(stderr, "%s: Can't open %s: %s\n",
@ -690,6 +692,21 @@ ino_t inode;
incr_link(inode);
}
void enter_symlink(ino_t inode, char *link)
{
zone_t z;
char *buf;
buf = alloc_block();
z = alloc_zone();
strcpy(buf, link);
put_block((z << zone_shift), buf);
add_zone(inode, z, (size_t) strlen(link), current_time);
free(buf);
}
/*================================================================
* eat_dir - recursively install directory
@ -738,6 +755,8 @@ ino_t parent;
if (token[6]) size = atoi(token[6]);
size = block_size * size;
add_zone(n, (zone_t) (makedev(maj,min)), size, current_time);
} else if (*p == 's') {
enter_symlink(n, token[4]);
} else {
/* Regular file. Go read it. */
if ((f = open(token[4], O_RDONLY)) < 0) {
@ -781,8 +800,6 @@ int f;
free(buf);
}
/*================================================================
* directory & inode management assist group
*===============================================================*/
@ -1151,6 +1168,7 @@ char *p;
if (c1 == 'd') mode |= S_IFDIR;
if (c1 == 'b') mode |= S_IFBLK;
if (c1 == 'c') mode |= S_IFCHR;
if (c1 == 's') mode |= S_IFLNK;
if (c1 == '-') mode |= S_IFREG;
if (c2 == 'u') mode |= S_ISUID;
if (c3 == 'g') mode |= S_ISGID;

13
usr.sbin/mkproto/mkproto.c
View file

@ -155,7 +155,7 @@ char *dirname;
count++;
strcpy(tempend, name);
if (stat(temp, &st) == -1) {
if (lstat(temp, &st) == -1) {
fprintf(stderr, "cant get status of '%s' \n", temp);
continue;
}
@ -189,6 +189,16 @@ char *dirname;
fprintf(outfile, "\n");
continue;
}
if (mode == S_IFLNK) {
char linkcontent[PATH_MAX];
memset(linkcontent, 0, sizeof(linkcontent));
if(readlink(temp, linkcontent, sizeof(linkcontent)) < 0) {
perror("readlink");
exit(1);
}
fprintf(outfile, "%s%s\n", indentstr, linkcontent);
continue;
}
fprintf(outfile, " /dev/null");
fprintf(stderr,"File\n\t%s\n has an invalid mode, made empty.\n",temp);
}
@ -217,6 +227,7 @@ struct stat *st;
(st->st_mode & S_IFMT) == S_IFDIR ? 'd' :
(st->st_mode & S_IFMT) == S_IFCHR ? 'c' :
(st->st_mode & S_IFMT) == S_IFBLK ? 'b' :
(st->st_mode & S_IFMT) == S_IFLNK ? 's' :
'-', /* file type */
(st->st_mode & S_ISUID) ? 'u' : '-', /* set uid */
(st->st_mode & S_ISGID) ? 'g' : '-', /* set gid */