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| -rw-r--r-- | utils/fsysopts.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/utils/fsysopts.c b/utils/fsysopts.c new file mode 100644 index 00000000..cf85e52a --- /dev/null +++ b/utils/fsysopts.c @@ -0,0 +1,124 @@ +/* Set options in a running filesystem + + Copyright (C) 1995 Free Software Foundation, Inc. + + Written by Miles Bader <miles@gnu.ai.mit.edu> + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2, or (at + your option) any later version. + + This program is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <hurd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <getopt.h> +#include <fcntl.h> +#include <unistd.h> + +#include <error.h> +#include <argz.h> + +#include <hurd/fsys.h> + +/* ---------------------------------------------------------------- */ + +#define USAGE "Usage: %s [OPTION...] FILE OPTIONS...\n" + +static void +usage(status) + int status; +{ + if (status != 0) + fprintf(stderr, "Try `%s --help' for more information.\n", + program_invocation_name); + else + { + printf(USAGE, program_invocation_name); + printf("\ +\n\ + -L, --dereference if a translator exists, put the new one on top\n\ + -R, --recursive pass these options to any child translators\n\ + --help give this help list\n\ + --version print version number of program\n\ +"); + } + + exit(status); +} + +#define SHORT_OPTIONS "L?V" + +static struct option options[] = +{ + {"dereference", no_argument, 0, 'L'}, + {"recursive", no_argument, 0, 'R'}, + {"help", no_argument, 0, '?'}, + {"version", no_argument, 0, 'V'}, + {0, 0, 0, 0} +}; + +/* ---------------------------------------------------------------- */ + +void +main(int argc, char *argv[]) +{ + int opt; + error_t err; + + /* The filesystem we're passing options to. */ + fsys_t fsys; + + /* The file we use as a handle to get FSYS. */ + char *node_name = 0; + file_t node; + + /* The filesystem options vector, in '\0' separated format. */ + char *argz = 0; + int argz_len = 0; + + int deref = 0, recursive = 0; + + /* Parse our options... */ + while ((opt = getopt_long(argc, argv, "-" SHORT_OPTIONS, options, 0)) != EOF) + switch (opt) + { + case 1: + node_name = optarg; + err = argz_create(argv + optind, &argz, &argz_len); + if (err) + error(3, err, "Can't create options vector"); + optind = argc; /* stop parsing */ + break; + case 'R': recursive = 1; break; + case 'L': deref = 1; break; + case 'V': printf ("%s 0.0\n", program_invocation_short_name); exit (0); + case '?': usage(0); + default: usage(-1); + } + + node = file_name_lookup(node_name, (deref ? 0 : O_NOTRANS), 0666); + if (node == MACH_PORT_NULL) + error(1, errno, "%s", node_name); + + /* Get the filesystem for NODE. */ + err = file_getcontrol (node, &fsys); + if (err) + error (2, err, "%s", node_name); + + err = fsys_set_options (fsys, argz, argz_len, recursive); + if (err) + error(5, err, "%s", node_name); + + exit(0); +} |