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Add an extra option to isvolume to check if the underlaying partition is

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perhaps read-only, while the volume appears to be writable because of the
filesystem overlays.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30327 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus 2009-04-22 14:45:29 +00:00
parent acc632c7ec
commit 2d294045c7
2 changed files with 70 additions and 30 deletions
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2
src/bin/Jamfile
View File

@ -32,7 +32,6 @@ StdBinCommands
finddir.c
hd.c
idestatus.c
isvolume.cpp
listarea.c
listimage.c
listport.c
@ -110,6 +109,7 @@ StdBinCommands
# Haiku-specific apps which need libbe.so
if $(TARGET_PLATFORM) = haiku {
StdBinCommands
isvolume.cpp
shutdown.cpp
: be : $(haiku-utils_rsrc) ;
}

98
src/bin/isvolume.cpp
View File

@ -1,17 +1,21 @@
/*
* Copyright 2002-2006, Haiku Inc. All rights reserved.
* Copyright 2002-2009, Haiku Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*
* Authors:
* Jonas Sundstrom, jonas.sundstrom@kirilla.com
* Stephan Aßmus <superstippi@gmx.de>
*/
#include <fs_info.h>
#include <stdio.h>
#include <string.h>
#include <DiskDevice.h>
#include <DiskDeviceRoster.h>
#include <Volume.h>
static void
usage()
@ -19,17 +23,19 @@ usage()
fprintf(stderr,
"Usage: isvolume {-OPTION} [volumename]\n"
" Where OPTION is one of:\n"
" -readonly - volume is read-only\n"
" -query - volume supports queries\n"
" -attribute - volume supports attributes\n"
" -mime - volume supports MIME information\n"
" -shared - volume is shared\n"
" -persistent - volume is backed on permanent storage\n"
" -removable - volume is on removable media\n"
" -readonly - volume is read-only\n"
" -readonly-partion - partition for the volume is read-only\n"
" -query - volume supports queries\n"
" -attribute - volume supports attributes\n"
" -mime - volume supports MIME information\n"
" -shared - volume is shared\n"
" -persistent - volume is backed on permanent storage\n"
" -removable - volume is on removable media\n"
" If the option is true for the named volume, 'yes' is printed\n"
" and if the option is false, 'no' is printed. Multiple options\n"
" can be specified in which case all of them must be true.\n\n"
" If no volume is specified, the volume of the current directory is assumed.\n");
" If no volume is specified, the volume of the current directory is "
"assumed.\n");
}
@ -39,7 +45,8 @@ main(int argc, char** argv)
dev_t volumeDevice = dev_for_path(".");
uint32 isVolumeFlags = 0;
fs_info volumeInfo;
bool doPartitionReadOnlyCheck = false;
for (int i = 1; i < argc; i++) {
if (!strcmp(argv[i], "--help")) {
usage();
@ -47,35 +54,67 @@ main(int argc, char** argv)
}
if (argv[i][0] == '-') {
if (! strcmp(argv[i], "-readonly"))
isVolumeFlags |= B_FS_IS_READONLY;
else if (! strcmp(argv[i], "-query"))
isVolumeFlags |= B_FS_HAS_QUERY;
else if (! strcmp(argv[i], "-attribute"))
isVolumeFlags |= B_FS_HAS_ATTR;
else if (! strcmp(argv[i], "-mime"))
isVolumeFlags |= B_FS_HAS_MIME;
else if (! strcmp(argv[i], "-shared"))
isVolumeFlags |= B_FS_IS_SHARED;
else if (! strcmp(argv[i], "-persistent"))
isVolumeFlags |= B_FS_IS_PERSISTENT;
else if (! strcmp(argv[i], "-removable"))
isVolumeFlags |= B_FS_IS_REMOVABLE;
if (strcmp(argv[i], "-readonly") == 0)
isVolumeFlags |= B_FS_IS_READONLY;
else if (strcmp(argv[i], "-query") == 0)
isVolumeFlags |= B_FS_HAS_QUERY;
else if (strcmp(argv[i], "-attribute") == 0)
isVolumeFlags |= B_FS_HAS_ATTR;
else if (strcmp(argv[i], "-mime") == 0)
isVolumeFlags |= B_FS_HAS_MIME;
else if (strcmp(argv[i], "-shared") == 0)
isVolumeFlags |= B_FS_IS_SHARED;
else if (strcmp(argv[i], "-persistent") == 0)
isVolumeFlags |= B_FS_IS_PERSISTENT;
else if (strcmp(argv[i], "-removable") == 0)
isVolumeFlags |= B_FS_IS_REMOVABLE;
else if (strcmp(argv[i], "-readonly-partion"))
doPartitionReadOnlyCheck = true;
else {
fprintf(stderr,
"%s: option %s is not understood (use --help for help)\n", argv[0], argv[i]);
"%s: option %s is not understood (use --help for help)\n",
argv[0], argv[i]);
return 1;
}
} else {
volumeDevice = dev_for_path(argv[i]);
if (volumeDevice < 0) {
fprintf(stderr, "%s: can't get information about volume: %s\n", argv[0], argv[i]);
fprintf(stderr, "%s: can't get information about volume: %s\n",
argv[0], argv[i]);
return 1;
}
}
}
if (doPartitionReadOnlyCheck) {
// This requires an extra code-path, because volumes may now appear
// writable, but only because of the "write" file-system overlay.
BVolume volume(volumeDevice);
status_t ret = volume.InitCheck();
if (ret != B_OK) {
fprintf(stderr, "%s: failed to get BVolume for device %ld: %s\n",
argv[0], volumeDevice, strerror(ret));
return 1;
}
BDiskDeviceRoster roster;
BDiskDevice diskDevice;
BPartition* partition;
ret = roster.FindPartitionByVolume(volume, &diskDevice,
&partition);
if (ret != B_OK) {
fprintf(stderr, "%s: failed to get partition for device %ld: %s\n",
argv[0], volumeDevice, strerror(ret));
return 1;
}
// check this option directly and not via fs_stat_dev()
if (partition->IsReadOnly()) {
printf("yes\n");
return 0;
}
}
if (fs_stat_dev(volumeDevice, &volumeInfo) == B_OK) {
if (volumeInfo.flags & isVolumeFlags)
printf("yes\n");
@ -84,7 +123,8 @@ main(int argc, char** argv)
return 0;
} else {
fprintf(stderr, "%s: can't get information about dev_t: %ld\n", argv[0], volumeDevice);
fprintf(stderr, "%s: can't get information about dev_t: %ld\n",
argv[0], volumeDevice);
return 1;
}
}