Added PROTECT_IMAGE, UNPROTECT_IMAGE

doc/rasctl.1

@@ -5,6 +5,7 @@ rasctl \- Sends management commands to the rascsi process
 .B rasctl
 \fB\-l\fR |
 \fB\-s\fR |
+[\fB\-d\fR \fIIMAGE_FOLDER\fR]
 [\fB\-g\fR \fILOG_LEVEL\fR]
 [\fB\-h\fR \fIHOST\fR]
 [\fB\-p\fR \fIPORT\fR]
@@ -31,6 +32,9 @@ Note: The command and type arguments are case insensitive. Only the first letter
 .BR \-a\fI " "\fIFILENAME:FILESIZE
 Create an image file in the default image folder with the specified name and size in bytes.
 .TP
+.BR \-g\fI " "\fIIMAGE_FOLDER
+Set the default image folder.
+.TP
 .BR \-g\fI " "\fILOG_LEVEL
 Set the rascsi log level (trace, debug, info, warn, err, critical, off).
 .TP

doc/rasctl_man_page.txt

@@ -6,8 +6,9 @@ NAME
        rasctl - Sends management commands to the rascsi process
 
 SYNOPSIS
-       rasctl  -l  | -s | [-g LOG_LEVEL] [-h HOST] [-p PORT] [-r RESERVED_IDS]
+       rasctl  -l  | -s | [-d IMAGE_FOLDER] [-g LOG_LEVEL] [-h HOST] [-p PORT]
-       [-v] -i ID [-c CMD] [-f FILE|PARAM] [-n NAME] [-t TYPE] [-u UNIT]
+       [-r RESERVED_IDS] [-v] -i ID [-c CMD] [-f  FILE|PARAM]  [-n  NAME]  [-t
+       TYPE] [-u UNIT]
 
 DESCRIPTION
        rasctl  Sends  commands to the rascsi process to make configuration ad‐
@@ -25,6 +26,9 @@ OPTIONS
               Create an image file in the default image folder with the speci‐
               fied name and size in bytes.
 
+       -g IMAGE_FOLDER
+              Set the default image folder.
+
        -g LOG_LEVEL
               Set the rascsi log level (trace, debug, info, warn, err,  criti‐
               cal, off).

src/raspberrypi/rascsi.cpp

@@ -914,6 +914,39 @@ bool CopyImage(int fd, const PbCommand& command)
 	return ReturnStatus(fd);
 }
 
+bool SetImagePermissions(int fd, const PbCommand& command)
+{
+	string filename = GetParam(command, "file");
+	if (filename.empty()) {
+		return ReturnStatus(fd, false, "Missing image filename");
+	}
+
+	if (filename.find('/') != string::npos) {
+		return ReturnStatus(fd, false, "The image filename '" + filename + "' must not contain a path");
+	}
+
+	filename = default_image_folder + "/" + filename;
+
+	bool protect = command.operation() == PROTECT_IMAGE;
+
+	int permissions = protect ? S_IRUSR | S_IRGRP | S_IROTH : S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
+
+	if (chmod(filename.c_str(), permissions) == -1) {
+		ostringstream error;
+		error << "Can't " << (protect ? "protect" : "unprotect") << " image file '" << filename << "': " << strerror(errno);
+		return ReturnStatus(fd, false, error.str());
+	}
+
+	if (protect) {
+		LOGINFO("%s", string("Protected image file '" + filename + "'").c_str());
+	}
+	else {
+		LOGINFO("%s", string("Unprotected image file '" + filename + "'").c_str());
+	}
+
+	return ReturnStatus(fd);
+}
+
 void DetachAll()
 {
 	Device *map[devices.size()];
@@ -1381,6 +1414,10 @@ bool ProcessCmd(const int fd, const PbCommand& command)
 		case COPY_IMAGE:
 			return CopyImage(fd, command);
 
+		case PROTECT_IMAGE:
+		case UNPROTECT_IMAGE:
+			return SetImagePermissions(fd, command);
+
 		default:
 			// This is a device-specific command handled below
 			break;

src/raspberrypi/rascsi_interface.proto

@@ -104,6 +104,16 @@ enum PbOperation {
     //   "to": The destination filename, relative to the default image folder. It must not contain a slash.
     // The destination filename must not yet exist.
     COPY_IMAGE = 18;
+    
+    // Write-protect an image file.
+    // Parameters:
+    //    "file": The filename, relative to the default image folder. It must not contain a slash.
+    PROTECT_IMAGE = 19;
+
+    // Make an image file writable.
+    // Parameters:
+    //    "file": The filename, relative to the default image folder. It must not contain a slash.
+    UNPROTECT_IMAGE = 20;
 }
 
 // The properties supported by a device

src/raspberrypi/rasctl.cpp

@@ -532,19 +532,21 @@ int main(int argc, char* argv[])
 		cerr << "SCSI Target Emulator RaSCSI Controller" << endl;
 		cerr << "version " << rascsi_get_version_string() << " (" << __DATE__ << ", " << __TIME__ << ")" << endl;
 		cerr << "Usage: " << argv[0] << " -i ID [-u UNIT] [-c CMD] [-t TYPE] [-b BLOCK_SIZE] [-n NAME] [-f FILE|PARAM] ";
-		cerr << "[-d DEFAULT_IMAGE_FOLDER] [-g LOG_LEVEL] [-h HOST] [-p PORT] [-r RESERVED_IDS] [-l] [-v]" << endl;
+		cerr << "[-d IMAGE_FOLDER] [-g LOG_LEVEL] [-h HOST] [-p PORT] [-r RESERVED_IDS] ";
-		cerr << " where  ID := {0|1|2|3|4|5|6|7}" << endl;
+		cerr << "[-a FILENAME:FILESIZE] [-w FILENAME] [-m CURRENT_NAME:NEW_NAME] [-x CURRENT_NAME:NEW_NAME] ";
-		cerr << "        UNIT := {0|1}, default setting is 0." << endl;
+		cerr << "[-l] [-v]" << endl;
+		cerr << " where  ID := {0-7}" << endl;
+		cerr << "        UNIT := {0|1}, default is 0" << endl;
 		cerr << "        CMD := {attach|detach|insert|eject|protect|unprotect|show}" << endl;
 		cerr << "        TYPE := {sahd|schd|scrm|sccd|scmo|scbr|scdp} or convenience type {hd|rm|mo|cd|bridge|daynaport}" << endl;
 		cerr << "        BLOCK_SIZE := {256|512|1024|2048|4096) bytes per hard disk drive block" << endl;
 		cerr << "        NAME := name of device to attach (VENDOR:PRODUCT:REVISION)" << endl;
 		cerr << "        FILE|PARAM := image file path or device-specific parameter" << endl;
-		cerr << "        DEFAULT_IMAGE_FOLDER := default location for image files, default is '~/images'" << endl;
+		cerr << "        IMAGE_FOLDER := default location for image files, default is '~/images'" << endl;
 		cerr << "        HOST := rascsi host to connect to, default is 'localhost'" << endl;
 		cerr << "        PORT := rascsi port to connect to, default is 6868" << endl;
 		cerr << "        RESERVED_IDS := comma-separated list of IDs to reserve" << endl;
-		cerr << "        LOG_LEVEL := log level {trace|debug|info|warn|err|critical|off}, default is 'trace'" << endl;
+		cerr << "        LOG_LEVEL := log level {trace|debug|info|warn|err|critical|off}, default is 'info'" << endl;
 		cerr << " If CMD is 'attach' or 'insert' the FILE parameter is required." << endl;
 		cerr << "Usage: " << argv[0] << " -l" << endl;
 		cerr << "       Print device list." << endl;