330 lines
7.8 KiB
C++
330 lines
7.8 KiB
C++
/* mount.cc
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Copyright 1996, 1997, 1998, 1999 Cygnus Solutions.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include <stdio.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <mntent.h>
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#include <windows.h>
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#include <sys/cygwin.h>
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#include <stdlib.h>
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#include <getopt.h>
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#ifdef errno
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#undef errno
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#endif
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#include <errno.h>
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static void show_mounts (void);
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static void show_cygdrive_info (void);
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static void change_cygdrive_prefix (const char *new_prefix, int flags);
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static int mount_already_exists (const char *posix_path, int flags);
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// static short create_missing_dirs = FALSE;
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static short force = FALSE;
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static const char *progname;
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static void
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error (const char *path)
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{
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fprintf (stderr, "%s: %s: %s\n", progname, path,
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(errno == EMFILE) ? "Too many mount entries" : strerror (errno));
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exit (1);
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}
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/* FIXME: do_mount should also print a warning message if the dev arg
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is a non-existent Win32 path. */
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static void
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do_mount (const char *dev, const char *where, int flags)
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{
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struct stat statbuf;
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char win32_path[MAX_PATH];
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int statres;
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cygwin_conv_to_win32_path (where, win32_path);
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statres = stat (win32_path, &statbuf);
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#if 0
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if (statres == -1)
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{
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/* FIXME: this'll fail if mount dir is missing any parent dirs */
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if (create_missing_dirs == TRUE)
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{
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if (mkdir (where, 0755) == -1)
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fprintf (stderr, "Warning: unable to create %s!\n", where);
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else
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statres = 0; /* Pretend stat succeeded if we could mkdir. */
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}
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}
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#endif
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if (mount (dev, where, flags))
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error (where);
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if (statres == -1)
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{
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if (force == FALSE)
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fprintf (stderr, "%s: warning - %s does not exist.\n", progname, where);
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}
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else if (!(statbuf.st_mode & S_IFDIR))
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{
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if (force == FALSE)
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fprintf (stderr, "%s: warning: %s is not a directory.\n", progname, where);
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}
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exit (0);
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}
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struct option longopts[] =
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{
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{"binary", no_argument, NULL, 'b'},
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{"force", no_argument, NULL, 'f'},
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{"system", no_argument, NULL, 's'},
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{"text", no_argument, NULL, 't'},
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{"user", no_argument, NULL, 'u'},
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{"executable", no_argument, NULL, 'x'},
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{"change-cygdrive-prefix", no_argument, NULL, 'c'},
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{"cygwin-executable", no_argument, NULL, 'X'},
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{"show-cygdrive-prefix", no_argument, NULL, 'p'},
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{"import-old-mounts", no_argument, NULL, 'i'},
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{NULL, 0, NULL, 0}
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};
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char opts[] = "bfstuxXpic";
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static void
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usage (void)
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{
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fprintf (stderr, "Usage: %s [OPTION] [<win32path> <posixpath>]\n\
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-b, --binary text files are equivalent to binary files\n\
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(newline = \\n)\n\
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-c, --change-cygdrive-prefix change the cygdrive path prefix to <posixpath>\n\
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-f, --force force mount, don't warn about missing mount\n\
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point directories\n\
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-i, --import-old-mounts copy old registry mount table mounts into the current\n\
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mount areas\n\
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-p, --show-cygdrive-prefix show user and/or system cygdrive path prefix\n\
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-s, --system add mount point to system-wide registry location\n\
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-t, --text (default) text files get \\r\\n line endings\n\
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-u, --user (default) add mount point to user registry location\n\
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-x, --executable treat all files under mount point as executables\n\
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-X, --cygwin-executable treat all files under mount point as cygwin\n\
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executables\n\
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", progname);
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exit (1);
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}
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int
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main (int argc, char **argv)
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{
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int i;
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int flags = 0;
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enum do_what
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{
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nada,
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saw_change_cygdrive_prefix,
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saw_import_old_mounts,
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saw_show_cygdrive_prefix
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} do_what = nada;
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progname = argv[0];
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if (argc == 1)
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{
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show_mounts ();
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exit (0);
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}
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while ((i = getopt_long (argc, argv, opts, longopts, NULL)) != EOF)
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switch (i)
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{
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case 'b':
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flags |= MOUNT_BINARY;
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break;
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case 'c':
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if (do_what == nada)
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do_what = saw_change_cygdrive_prefix;
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else
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usage ();
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break;
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case 'f':
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force = TRUE;
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break;
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case 'i':
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if (do_what == nada)
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do_what = saw_import_old_mounts;
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else
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usage ();
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break;
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case 'p':
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if (do_what == nada)
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do_what = saw_show_cygdrive_prefix;
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else
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usage ();
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break;
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case 's':
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flags |= MOUNT_SYSTEM;
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break;
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case 't':
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flags &= ~MOUNT_BINARY;
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break;
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case 'u':
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flags &= ~MOUNT_SYSTEM;
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break;
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case 'X':
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flags |= MOUNT_CYGWIN_EXEC;
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break;
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case 'x':
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flags |= MOUNT_EXEC;
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break;
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default:
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usage ();
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}
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argc--;
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switch (do_what)
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{
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case saw_change_cygdrive_prefix:
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if (optind != argc)
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usage ();
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change_cygdrive_prefix (argv[optind], flags);
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break;
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case saw_import_old_mounts:
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if (optind <= argc)
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usage ();
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else
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cygwin_internal (CW_READ_V1_MOUNT_TABLES);
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break;
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case saw_show_cygdrive_prefix:
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if (optind <= argc)
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usage ();
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show_cygdrive_info ();
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break;
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default:
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if (optind != (argc - 1))
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{
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fprintf (stderr, "%s: too many arguments\n", progname);
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usage ();
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}
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if (force || !mount_already_exists (argv[optind + 1], flags))
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do_mount (argv[optind], argv[optind + 1], flags);
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else
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{
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errno = EBUSY;
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error (argv[optind + 1]);
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}
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}
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/* NOTREACHED */
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return 0;
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}
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static void
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show_mounts (void)
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{
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FILE *m = setmntent ("/-not-used-", "r");
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struct mntent *p;
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const char *format = "%s on %s type %s (%s)\n";
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// printf (format, "Device", "Directory", "Type", "Flags");
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while ((p = getmntent (m)) != NULL)
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printf (format, p->mnt_fsname, p->mnt_dir, p->mnt_type, p->mnt_opts);
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endmntent (m);
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}
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/* Return 1 if mountpoint from the same registry area is already in
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mount table. Otherwise return 0. */
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static int
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mount_already_exists (const char *posix_path, int flags)
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{
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int found_matching = 0;
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FILE *m = setmntent ("/-not-used-", "r");
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struct mntent *p;
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while ((p = getmntent (m)) != NULL)
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{
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/* if the paths match, and they're both the same type of mount. */
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if (strcmp (p->mnt_dir, posix_path) == 0)
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{
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if (p->mnt_type[0] == 'u')
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{
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if (!(flags & MOUNT_SYSTEM)) /* both current_user */
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found_matching = 1;
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else
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fprintf (stderr,
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"%s: warning: system mount point of '%s' "
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"will always be masked by user mount.\n",
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progname, posix_path);
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break;
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}
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else if (p->mnt_type[0] == 's')
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{
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if (flags & MOUNT_SYSTEM) /* both system */
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found_matching = 1;
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else
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fprintf (stderr,
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"%s: warning: user mount point of '%s' "
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"masks system mount.\n",
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progname, posix_path);
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break;
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}
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else
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{
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fprintf (stderr, "%s: warning: couldn't determine mount type.\n", progname);
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break;
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}
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}
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}
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endmntent (m);
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return found_matching;
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}
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/* change_cygdrive_prefix: Change the cygdrive prefix */
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static void
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change_cygdrive_prefix (const char *new_prefix, int flags)
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{
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flags |= MOUNT_AUTO;
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if (mount (NULL, new_prefix, flags))
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error (new_prefix);
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exit (0);
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}
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/* show_cygdrive_info: Show the user and/or cygdrive info, i.e., prefix and
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flags.*/
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static void
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show_cygdrive_info ()
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{
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/* Get the cygdrive info */
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char user[MAX_PATH];
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char system[MAX_PATH];
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char user_flags[MAX_PATH];
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char system_flags[MAX_PATH];
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cygwin_internal (CW_GET_CYGDRIVE_INFO, user, system, user_flags,
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system_flags);
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/* Display the user and system cygdrive path prefix, if necessary
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(ie, not empty) */
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const char *format = "%-18s %-11s %s\n";
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printf (format, "Prefix", "Type", "Flags");
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if (strlen (user) > 0)
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printf (format, user, "user", user_flags);
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if (strlen (system) > 0)
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printf (format, system, "system", system_flags);
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exit (0);
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}
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