Added a mkinitrd program that creates initrds for Sortix.
This commit is contained in:
Jonas 'Sortie' Termansen
parent
5c86cb4abd
commit
fa7834b5d6
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@ -0,0 +1,13 @@
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CPPFLAGS=-I..
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CXXFLAGS=-Wall
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BINARIES=mkinitrd lsinitrd catinitrd
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all: $(BINARIES)
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%: %.cpp
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$(CXX) $(CPPFLAGS) $(CXXFLAGS) $< -o $@
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clean:
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rm -f $(BINARIES)
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@ -0,0 +1,223 @@
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/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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catinitrd.cpp
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Output files in a Sortix ramdisk.
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******************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <error.h>
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#include <unistd.h>
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#include <sortix/initrd.h>
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bool writeall(int fd, const void* p, size_t size)
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{
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const uint8_t* buffer = (const uint8_t*) p;
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size_t bytesWritten = 0;
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while ( bytesWritten < size )
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{
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ssize_t written = write(fd, buffer + bytesWritten, size - bytesWritten);
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if ( written < 0 ) { return false; }
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bytesWritten += written;
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}
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return true;
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}
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bool readall(int fd, void* p, size_t size)
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{
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uint8_t* buffer = (uint8_t*) p;
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size_t bytesread = 0;
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while ( bytesread < size )
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{
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ssize_t justread = read(fd, buffer + bytesread, size - bytesread);
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if ( justread <= 0 ) { return false; }
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bytesread += justread;
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}
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return true;
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}
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void usage(int argc, char* argv[])
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{
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printf("usage: %s [OPTIONS] <ramdisk> [files]\n", argv[0]);
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printf("Options:\n");
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printf(" -q Surpress normal output\n");
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printf(" -v Be verbose\n");
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printf(" --usage Display this screen\n");
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printf(" --help Display this screen\n");
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printf(" --version Display version information\n");
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}
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void version()
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{
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printf("catinitrd 0.1\n");
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printf("Copyright (C) 2011 Jonas 'Sortie' Termansen\n");
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printf("This is free software; see the source for copying conditions. There is NO\n");
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printf("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
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printf("website: http://www.maxsi.org/software/sortix/\n");
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}
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bool verbose = false;
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int main(int argc, char* argv[])
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{
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if ( argc < 2 ) { usage(argc, argv); return 0; }
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const char* src = NULL;
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for ( int i = 1; i < argc; i++ )
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{
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if ( strcmp(argv[i], "-q") == 0 )
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{
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verbose = false;
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argv[i] = NULL;
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}
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else if ( strcmp(argv[i], "-v") == 0 )
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{
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verbose = true;
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argv[i] = NULL;
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}
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else if ( strcmp(argv[i], "--usage") == 0 )
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{
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usage(argc, argv);
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return 0;
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}
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else if ( strcmp(argv[i], "--help") == 0 )
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{
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usage(argc, argv);
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return 0;
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}
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else if ( strcmp(argv[i], "--version") == 0 )
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{
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version();
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return 0;
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}
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else if ( src == NULL )
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{
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src = argv[i];
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argv[i] = NULL;
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}
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}
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int fd = open(src, O_RDONLY);
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if ( fd < 0 ) { error(0, errno, "%s", src); return 1; }
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Sortix::InitRD::Header header;
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if ( !readall(fd, &header, sizeof(header)) )
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{
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error(0, errno, "read: %s", src);
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close(fd);
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return 1;
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}
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if ( strcmp(header.magic, "sortix-initrd-1") != 0 )
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{
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error(0, 0, "not a sortix ramdisk: %s", src);
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close(fd);
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return 1;
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}
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int result = 0;
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for ( int i = 1; i < argc; i++ )
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{
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if ( argv[i] == NULL ) { continue; }
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bool found = false;
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for ( uint32_t n = 0; n < header.numfiles; n++ )
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{
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off_t fileheaderpos = sizeof(header) + n * sizeof(Sortix::InitRD::FileHeader);
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if ( lseek(fd, fileheaderpos, SEEK_SET ) < 0 )
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{
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error(0, errno, "seek: %s", src);
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close(fd);
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return 1;
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}
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Sortix::InitRD::FileHeader fileheader;
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if ( !readall(fd, &fileheader, sizeof(fileheader)) )
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{
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error(0, errno, "read: %s", src);
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close(fd);
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return 1;
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}
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if ( strcmp(argv[i], fileheader.name) != 0 ) { continue; }
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found = true;
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if ( lseek(fd, fileheader.offset, SEEK_SET ) < 0 )
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{
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error(0, errno, "seek: %s", src);
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close(fd);
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return 1;
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}
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const size_t BUFFER_SIZE = 16384UL;
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uint8_t buffer[BUFFER_SIZE];
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uint32_t filesize = fileheader.size;
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uint32_t readsofar = 0;
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while ( readsofar < filesize )
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{
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uint32_t left = filesize-readsofar;
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size_t toread = (left < BUFFER_SIZE) ? left : BUFFER_SIZE;
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ssize_t bytesread = read(fd, buffer, toread);
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if ( bytesread <= 0 )
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{
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error(0, errno, "read: %s", src);
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close(fd);
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return 1;
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}
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if ( !writeall(1, buffer, bytesread) )
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{
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error(0, errno, "write: <stdout>");
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close(fd);
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return 1;
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}
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readsofar += bytesread;
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}
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}
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if ( !found )
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{
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result |= 1;
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error(0, ENOENT, "%s", argv[i]);
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}
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}
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close(fd);
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return result;
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}
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@ -0,0 +1,155 @@
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/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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lsinitrd.cpp
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Lists the files in a Sortix ramdisk.
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******************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <error.h>
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#include <unistd.h>
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#include <sortix/initrd.h>
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bool readall(int fd, void* p, size_t size)
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{
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uint8_t* buffer = (uint8_t*) p;
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size_t bytesread = 0;
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while ( bytesread < size )
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{
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ssize_t justread = read(fd, buffer + bytesread, size - bytesread);
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if ( justread <= 0 ) { return false; }
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bytesread += justread;
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}
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return true;
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}
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void usage(int argc, char* argv[])
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{
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printf("usage: %s [OPTIONS] <ramdisks>\n", argv[0]);
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printf("Options:\n");
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printf(" -q Surpress normal output\n");
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printf(" -v Be verbose\n");
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printf(" --usage Display this screen\n");
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printf(" --help Display this screen\n");
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printf(" --version Display version information\n");
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}
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void version()
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{
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printf("lsinitrd 0.1\n");
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printf("Copyright (C) 2011 Jonas 'Sortie' Termansen\n");
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printf("This is free software; see the source for copying conditions. There is NO\n");
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printf("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
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printf("website: http://www.maxsi.org/software/sortix/\n");
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}
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bool verbose = false;
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int listfiles(const char* filepath)
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{
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int fd = open(filepath, O_RDONLY);
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if ( fd < 0 ) { error(0, errno, "%s", filepath); return 1; }
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Sortix::InitRD::Header header;
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if ( !readall(fd, &header, sizeof(header)) )
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{
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error(0, errno, "read: %s", filepath);
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close(fd);
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return 1;
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}
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if ( strcmp(header.magic, "sortix-initrd-1") != 0 )
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{
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error(0, 0, "not a sortix ramdisk: %s", filepath);
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close(fd);
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return 1;
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}
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for ( uint32_t i = 0; i < header.numfiles; i++ )
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{
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Sortix::InitRD::FileHeader fileheader;
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if ( !readall(fd, &fileheader, sizeof(fileheader)) )
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{
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error(0, errno, "read: %s", filepath);
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close(fd);
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return 1;
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}
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printf("%s\n", fileheader.name);
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}
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close(fd);
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return 0;
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}
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int main(int argc, char* argv[])
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{
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if ( argc < 2 ) { usage(argc, argv); return 0; }
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for ( int i = 1; i < argc; i++ )
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{
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if ( strcmp(argv[i], "-q") == 0 )
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{
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verbose = false;
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argv[i] = NULL;
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}
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else if ( strcmp(argv[i], "-v") == 0 )
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{
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verbose = true;
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argv[i] = NULL;
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}
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else if ( strcmp(argv[i], "--usage") == 0 )
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{
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usage(argc, argv);
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return 0;
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}
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else if ( strcmp(argv[i], "--help") == 0 )
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{
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usage(argc, argv);
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return 0;
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}
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else if ( strcmp(argv[i], "--version") == 0 )
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{
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version();
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return 0;
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}
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}
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int result = 0;
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for ( int i = 1; i < argc; i++ )
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{
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if ( argv[i] == NULL ) { continue; }
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result |= listfiles(argv[i]);
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}
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return result;
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}
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@ -0,0 +1,263 @@
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/******************************************************************************
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COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
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This file is part of Sortix.
|
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|
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Sortix 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 3 of the License, or (at your option) any later
|
||||
version.
|
||||
|
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Sortix 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.
|
||||
|
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You should have received a copy of the GNU General Public License along
|
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with Sortix. If not, see <http://www.gnu.org/licenses/>.
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mkinitrd.cpp
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Produces a simple ramdisk meant for bootstrapping the Sortix kernel.
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******************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <error.h>
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#include <unistd.h>
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#include <sortix/initrd.h>
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bool writeall(int fd, const void* p, size_t size)
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{
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const uint8_t* buffer = (const uint8_t*) p;
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size_t bytesWritten = 0;
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while ( bytesWritten < size )
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{
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ssize_t written = write(fd, buffer + bytesWritten, size - bytesWritten);
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if ( written < 0 ) { return false; }
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bytesWritten += written;
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}
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return true;
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}
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void usage(int argc, char* argv[])
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{
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printf("usage: %s [OPTIONS] <files>\n", argv[0]);
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printf("Options:\n");
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printf(" -o <file> Write the ramdisk to this file\n");
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printf(" -q Surpress normal output\n");
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printf(" -v Be verbose\n");
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printf(" --usage Display this screen\n");
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printf(" --help Display this screen\n");
|
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printf(" --version Display version information\n");
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}
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void version()
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{
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printf("mkinitrd 0.1\n");
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printf("Copyright (C) 2011 Jonas 'Sortie' Termansen\n");
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printf("This is free software; see the source for copying conditions. There is NO\n");
|
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printf("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
|
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printf("website: http://www.maxsi.org/software/sortix/\n");
|
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}
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bool verbose = false;
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int main(int argc, char* argv[])
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{
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const char* dest = NULL;
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if ( argc < 2 ) { usage(argc, argv); return 0; }
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uint32_t numfiles = 0;
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for ( int i = 1; i < argc; i++ )
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{
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if ( strcmp(argv[i], "-o") == 0 )
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{
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if ( i + 1 < argc )
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{
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dest = argv[i+1];
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argv[i+1] = NULL;
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}
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argv[i] = NULL;
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i++;
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}
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else if ( strcmp(argv[i], "-q") == 0 )
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{
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verbose = false;
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argv[i] = NULL;
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}
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else if ( strcmp(argv[i], "-v") == 0 )
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{
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verbose = true;
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argv[i] = NULL;
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}
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else if ( strcmp(argv[i], "--usage") == 0 )
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{
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usage(argc, argv);
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return 0;
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}
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else if ( strcmp(argv[i], "--help") == 0 )
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{
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usage(argc, argv);
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return 0;
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}
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else if ( strcmp(argv[i], "--version") == 0 )
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{
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version();
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return 0;
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}
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else
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{
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numfiles++;
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}
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}
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if ( dest == NULL )
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{
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fprintf(stderr, "%s: no output file specified\n", argv[0]);
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return 0;
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}
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int fd = open(dest, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
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if ( fd < 0 )
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{
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error(0, errno, "%s", dest);
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return 1;
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}
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// Write the initrd headers.
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Sortix::InitRD::Header header;
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||||
memset(&header, 0, sizeof(header));
|
||||
strcpy(header.magic, "sortix-initrd-1");
|
||||
header.numfiles = numfiles;
|
||||
if ( !writeall(fd, &header, sizeof(header)) )
|
||||
{
|
||||
error(0, errno, "write: %s", dest);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
uint32_t fileoffset = sizeof(header) + numfiles * sizeof(Sortix::InitRD::FileHeader);
|
||||
|
||||
uint32_t filenum = 0;
|
||||
for ( int i = 1; i < argc; i++ )
|
||||
{
|
||||
const char* file = argv[i];
|
||||
|
||||
if ( file == NULL ) { continue; }
|
||||
|
||||
Sortix::InitRD::FileHeader fileheader;
|
||||
memset(&fileheader, 0, sizeof(fileheader));
|
||||
|
||||
if ( sizeof(fileheader.name) - 1 < strlen(file) )
|
||||
{
|
||||
fprintf(stderr, "%s: file name is too long: %s\n", argv[0], file);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int filefd = open(file, O_RDONLY);
|
||||
if ( filefd < 0 )
|
||||
{
|
||||
error(0, errno, "%s", file);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if ( verbose )
|
||||
{
|
||||
fprintf(stderr, "%s\n", file);
|
||||
}
|
||||
|
||||
struct stat st;
|
||||
if ( fstat(filefd, &st) != 0 )
|
||||
{
|
||||
error(0, errno, "stat: %s", file);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
uint32_t filesize = st.st_size;
|
||||
fileheader.permissions = 0755;
|
||||
fileheader.size = filesize;
|
||||
fileheader.owner = 1;
|
||||
fileheader.group = 1;
|
||||
fileheader.offset = fileoffset;
|
||||
strcpy(fileheader.name, file);
|
||||
|
||||
off_t fileheaderpos = sizeof(header) + filenum * sizeof(Sortix::InitRD::FileHeader);
|
||||
if ( lseek(fd, fileheaderpos, SEEK_SET ) < 0 )
|
||||
{
|
||||
error(0, errno, "seek: %s", dest);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if ( !writeall(fd, &fileheader, sizeof(fileheader)) )
|
||||
{
|
||||
error(0, errno, "write: %s", dest);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if ( lseek(fd, fileoffset, SEEK_SET ) < 0 )
|
||||
{
|
||||
error(0, errno, "seek: %s", dest);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
const size_t BUFFER_SIZE = 16384UL;
|
||||
uint8_t buffer[BUFFER_SIZE];
|
||||
|
||||
uint32_t readsofar = 0;
|
||||
while ( readsofar < filesize )
|
||||
{
|
||||
uint32_t left = filesize-readsofar;
|
||||
size_t toread = (left < BUFFER_SIZE) ? left : BUFFER_SIZE;
|
||||
ssize_t bytesread = read(filefd, buffer, toread);
|
||||
if ( bytesread <= 0 )
|
||||
{
|
||||
error(0, errno, "read: %s", file);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if ( !writeall(fd, buffer, bytesread) )
|
||||
{
|
||||
error(0, errno, "write: %s", dest);
|
||||
close(fd);
|
||||
unlink(dest);
|
||||
return 1;
|
||||
}
|
||||
|
||||
readsofar += bytesread;
|
||||
}
|
||||
|
||||
fileoffset += filesize;
|
||||
filenum++;
|
||||
|
||||
close(filefd);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,54 @@
|
|||
/******************************************************************************
|
||||
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
|
||||
|
||||
This file is part of Sortix.
|
||||
|
||||
Sortix 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 3 of the License, or (at your option) any later
|
||||
version.
|
||||
|
||||
Sortix 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 Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
initrd.h
|
||||
Declares the structure of the Sortix ramdisk.
|
||||
|
||||
******************************************************************************/
|
||||
|
||||
#ifndef SORTIX_INITRD_H
|
||||
#define SORTIX_INITRD_H
|
||||
|
||||
namespace Sortix
|
||||
{
|
||||
namespace InitRD
|
||||
{
|
||||
struct Header;
|
||||
struct FileHeader;
|
||||
|
||||
struct Header
|
||||
{
|
||||
char magic[16]; // Contains "sortix-initrd-1"
|
||||
uint32_t numfiles;
|
||||
// FileHeader[numfiles];
|
||||
};
|
||||
|
||||
struct FileHeader
|
||||
{
|
||||
mode_t permissions;
|
||||
uid_t owner;
|
||||
gid_t group;
|
||||
uint32_t size;
|
||||
uint32_t offset; // where the physical data is located.
|
||||
char name[128];
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue