diff options
Diffstat (limited to 'winsup/utils/mount.cc')
| -rw-r--r-- | winsup/utils/mount.cc | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/winsup/utils/mount.cc b/winsup/utils/mount.cc new file mode 100644 index 000000000..2c348703a --- /dev/null +++ b/winsup/utils/mount.cc @@ -0,0 +1,240 @@ +/* mount.cc + + Copyright 1996, 1997, 1998, 1999 Cygnus Solutions. + +This file is part of Cygwin. + +This software is a copyrighted work licensed under the terms of the +Cygwin license. Please consult the file "CYGWIN_LICENSE" for +details. */ + +#include <stdio.h> +#include <sys/mount.h> +#include <sys/stat.h> +#include <mntent.h> +#include <windows.h> +#include <sys/cygwin.h> +#include "winsup.h" +#include "external.h" + +#ifdef errno +#undef errno +#endif +#include <errno.h> + +static void show_mounts (void); +static void change_cygdrive_prefix (const char *new_prefix, int flags); +static int mount_already_exists (const char *posix_path, int flags); + +// static short create_missing_dirs = FALSE; +static short force = FALSE; + +static const char *progname; + +/* FIXME: do_mount should also print a warning message if the dev arg + is a non-existent Win32 path. */ + +static void +do_mount (const char *dev, const char *where, int flags) +{ + struct stat statbuf; + char win32_path[MAX_PATH]; + int statres; + + cygwin_conv_to_win32_path (where, win32_path); + + statres = stat (win32_path, &statbuf); + +#if 0 + if (statres == -1) + { + /* FIXME: this'll fail if mount dir is missing any parent dirs */ + if (create_missing_dirs == TRUE) + { + if (mkdir (where, 0755) == -1) + fprintf (stderr, "Warning: unable to create %s!\n", where); + else + statres = 0; /* Pretend stat succeeded if we could mkdir. */ + } + } +#endif + + if (mount (dev, where, flags)) + { + perror ("mount failed"); + exit (1); + } + + if (statres == -1) + { + if (force == FALSE) + fprintf (stderr, "%s: warning - %s does not exist.\n", progname, where); + } + else if (!(statbuf.st_mode & S_IFDIR)) + { + if (force == FALSE) + fprintf (stderr, "%s: warning: %s is not a directory!\n", progname, where); + } + + exit (0); +} + +static void +usage (void) +{ + fprintf (stderr, "usage %s [-bfstux] <win32path> <posixpath> +-b text files are equivalent to binary files (newline = \\n) +-f force mount, don't warn about missing mount point directories +-s add mount point to system-wide registry location +-t text files get \\r\\n line endings (default) +-u add mount point to user registry location (default) +-x treat all files under mount point as executables + +[-bs] --change-cygdrive-prefix <posixpath> + change the cygdrive path prefix to <posixpath> +--import-old-mounts + copy old registry mount table mounts into the current mount areas +", progname); + exit (1); +} + +int +main (int argc, const char **argv) +{ + int i; + int flags = 0; + + progname = argv[0]; + + if (argc == 1) + { + show_mounts (); + exit (0); + } + + for (i = 1; i < argc; ++i) + { + if (argv[i][0] != '-') + break; + + if (strcmp (argv[i], "--change-cygdrive-prefix") == 0) + { + if ((i + 2) != argc) + usage (); + + change_cygdrive_prefix (argv[i+1], flags); + } + else if (strcmp (argv[i], "--import-old-mounts") == 0) + { + if ((i + 1) != argc) + usage (); + + cygwin_internal (CW_READ_V1_MOUNT_TABLES); + exit (0); + } + else if (strcmp (argv[i], "-b") == 0) + flags |= MOUNT_BINARY; + else if (strcmp (argv[i], "-t") == 0) + flags &= ~MOUNT_BINARY; +#if 0 + else if (strcmp (argv[i], "-c") == 0) + create_missing_dirs = TRUE; +#endif + else if (strcmp (argv[i], "-s") == 0) + flags |= MOUNT_SYSTEM; + else if (strcmp (argv[i], "-u") == 0) + flags &= ~MOUNT_SYSTEM; + else if (strcmp (argv[i], "-x") == 0) + flags |= MOUNT_EXEC; + else if (strcmp (argv[i], "-f") == 0) + force = TRUE; + else + usage (); + } + + if ((i + 2) != argc) + usage (); + + if ((force == FALSE) && (mount_already_exists (argv[i + 1], flags))) + { + errno = EBUSY; + perror ("mount failed"); + exit (1); + } + else + do_mount (argv[i], argv[i + 1], flags); + + /* NOTREACHED */ + return 0; +} + +static void +show_mounts (void) +{ + FILE *m = setmntent ("/-not-used-", "r"); + struct mntent *p; + const char *format = "%-18s %-18s %-11s %s\n"; + + printf (format, "Device", "Directory", "Type", "Flags"); + while ((p = getmntent (m)) != NULL) + { + printf (format, + p->mnt_fsname, + p->mnt_dir, + p->mnt_type, + p->mnt_opts); + } + endmntent (m); +} + +/* Return 1 if mountpoint from the same registry area is already in + mount table. Otherwise return 0. */ +static int +mount_already_exists (const char *posix_path, int flags) +{ + int found_matching = 0; + + FILE *m = setmntent ("/-not-used-", "r"); + struct mntent *p; + + while ((p = getmntent (m)) != NULL) + { + /* if the paths match, and they're both the same type of mount. */ + if (strcmp (p->mnt_dir, posix_path) == 0) + { + if (p->mnt_type[0] == 'u' && !(flags & MOUNT_SYSTEM)) /* both current_user */ + { + found_matching = 1; + break; + } + else if (p->mnt_type[0] == 's' && (flags & MOUNT_SYSTEM)) /* both system */ + { + found_matching = 1; + break; + } + else + { + fprintf (stderr, "%s: warning -- couldn't determine mount type.\n", progname); + break; + } + } + } + endmntent (m); + + return found_matching; +} + +/* change_cygdrive_prefix: Change the cygdrive prefix */ +static void +change_cygdrive_prefix (const char *new_prefix, int flags) +{ + flags |= MOUNT_AUTO; + + if (mount (NULL, new_prefix, flags)) + { + perror ("mount failed"); + exit (1); + } + + exit (0); +} |