feat: mkfs.stpd (WIP)

.gitignore

@@ -29,3 +29,5 @@ src/stpdfs-fuse
 Debug/
 .vs/
 html/
+.dirstamp
+mkfs.stpd

Makefile.am

@@ -1,4 +1,4 @@
-SUBDIRS = lib 
+SUBDIRS = lib tools
 
 if BUILD_FUSE
 SUBDIRS  += fuse

configure.ac

@@ -14,6 +14,8 @@ AC_PROG_INSTALL
 AC_PROG_RANLIB
 AM_PROG_CC_C_O
 
+AC_CONFIG_HEADERS([config.h])
+
 AS_IF([ test "x$host_os" != "xmingw32" ], [
 	PKG_CHECK_MODULES([FUSE], [fuse3])
 ])
@@ -26,8 +28,23 @@ AC_CHECK_INCLUDES_DEFAULT
 AC_C_CONST
 AC_C_INLINE
 
+AC_CHECK_HEADERS(m4_normalize([
+	libgen.h
+	getopt.h
+]))
+
+AC_CHECK_TYPES([struct option], [], [],
+[#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif])
+
+AC_CHECK_FUNCS(m4_normalize([
+	getopt_long
+]))
+
 AC_CONFIG_FILES([Makefile
 				lib/Makefile
+				tools/Makefile
 				linux/Makefile
 				fuse/Makefile])
 

lib/stpdfs.h

@@ -1,4 +1,3 @@
-#include <cstdint>
 #ifndef STPDFS_H
 # define STPDFS_H 1
 
@@ -6,15 +5,16 @@
 
 # define STPDFS_SB_MAGIC 0x44505453
 
-# define STPDFS_BLOCK_SIZE 512
+# define STPDFS_BLOCK_SIZE_BITS 10
+# define STPDFS_BLOCK_SIZE (1 << STPDFS_BLOCK_SIZE_BITS)
+
+# define STPDFS_NAME_MAX 255
+
+# define STPDFS_INODES_PER_BLOCK (STPDFS_BLOCK_SIZE / (sizeof(struct stpdfs_inode)))
 
 # define STPDFS_LZP_COMPRESSION (1 << 0)
 # define STPDFS_FILE_ENCRYPTION (1 << 1)
 
-typedef uint32_t stpdfs_addr_t;
-typedef uint32_t stpdfs_off_t;
-typedef uint64_t stpdfs_time_t;
-
 struct stpdfs_free {
 	uint32_t free[100];
 	uint8_t nfree;
@@ -25,24 +25,24 @@ struct stpdfs_free {
  */
 struct stpdfs_sb {
 	uint32_t magic;
-	uint32_t isize;
-	uint32_t fsize;
+	uint32_t isize; /*< size in block of the I list */
+	uint32_t fsize; /*< size in block of the entire volume */
 	uint32_t free[100];
-	uint8_t nfree;
+	uint8_t nfree; /*< number of free block (0-100) */
 	uint8_t flock;
 	uint8_t ilock;
 	uint8_t fmod;
-	uint32_t time[2];
+	uint64_t time;
 } __attribute__((packed));
 
 /**
  * \brief StupidFS I-node
  */
 struct inode {
-	uint16_t mode;
-	uint8_t nlink;
-	uint8_t uid;
-	uint8_t gid;
+	uint16_t mode; /*< file mode */
+	uint8_t nlink; /*< link count */
+	uint8_t uid;   /*< owner user id */
+	uint8_t gid;   /*< group id */
 	uint32_t size;
 	uint16_t addr[8];
 	uint32_t actime[2];
@@ -56,6 +56,4 @@ struct file {
 	char filename[32];
 };
 
-
-
 #endif /* !STPDFS_H */

mkfs/main.c

@@ -1,16 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-static const char *prg_name;
-
-void
-usage(int retval)
-{
-
-}
-
-int
-main(void)
-{
-	return (EXIT_SUCCESS);
-}

tools/Makefile.am

@@ -0,0 +1,7 @@
+AM_CFLAGS = -I$(top_srcdir)/lib -I$(top_srcdir)
+
+bin_PROGRAMS = mkfs.stpd
+
+mkfs_stpd_SOURCES = mkfs/main.c
+
+man_MANS = mkfs/mkfs.stpd.8

tools/mkfs/main.c

@@ -0,0 +1,173 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stpdfs.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+#ifdef HAVE_LIBGEN_H
+# include <libgen.h>
+#endif /* HAVE_LIBGEN_H */
+#ifdef HAVE_GETOPT_H
+# include <getopt.h>
+#endif /* HAVE_GETOPT_H */
+
+static const char *prg_name;
+static int inodes = -1;
+static const char *device;
+static int blocks = -1;
+static struct stpdfs_sb super;
+
+#ifdef HAVE_STRUCT_OPTION
+static struct option long_options[] = {
+	{"help", no_argument, 0, 'h'},
+	{"version", no_argument, 0, 'V'},
+	{"inodes", required_argument, 0, 'i'},
+	{0, 0, 0, 0}
+};
+#endif /* HAVE_STRUCT_OPTION */
+
+static void
+usage(int retval)
+{
+	if (retval == EXIT_FAILURE)
+	{
+		fprintf(stderr, "Try '%s -h' for more information.\n", prg_name);
+	}
+	else
+	{
+		printf("Usage: %s [options] /dev/name [blocks]\n\n", prg_name);
+		printf("Options:\n");
+		printf(" -i, --inode <num>  number of inodes for the filesystem\n");
+		printf(" -h, --help         display this help\n");
+		printf(" -V, --version      display version\n\n");
+
+		printf("For more details see mkfs.stpd(8).\n");
+	}
+	exit(retval);
+}
+
+static void
+version(void)
+{
+	printf("%s (%s) %s\n", prg_name, PACKAGE_NAME, PACKAGE_VERSION);
+	exit(EXIT_SUCCESS);
+}
+
+static int
+write_block(int fd, void *data, size_t size)
+{
+	uint8_t buffer[STPDFS_BLOCK_SIZE];
+
+	memset(buffer, 0, STPDFS_BLOCK_SIZE);
+	if (data)
+	{
+		memcpy(buffer, data, size);
+	}
+
+	return (write(fd, buffer, STPDFS_BLOCK_SIZE) == STPDFS_BLOCK_SIZE); 
+}
+
+static int
+mkfs()
+{
+	struct stat statbuf;
+	int fd;
+	int dev_block;
+
+	if (stat(device, &statbuf) < 0)
+	{
+		perror(device);
+		return (EXIT_FAILURE);
+	}
+
+	fd = open(device, O_RDWR);
+	if (fd < 0)
+	{
+		perror(device);
+		return (EXIT_FAILURE);
+	}
+
+	dev_block = statbuf.st_size / STPDFS_BLOCK_SIZE;
+	printf("device blocks: %d\n", dev_block);
+	if (blocks < 0)
+	{
+		blocks = dev_block;
+	}
+
+	if (inodes <= 0)
+	{
+		if (512 * 1024 < blocks)
+		{
+			inodes = blocks / 8;
+		}
+		else
+		{
+			inodes = blocks / 3;
+		}
+	}
+
+	write_block(fd, NULL, 0);
+
+	super.magic = STPDFS_SB_MAGIC;
+	super.fsize = blocks;
+
+	write_block(fd, &super, sizeof(struct stpdfs_sb));
+
+	close(fd);
+
+	return (EXIT_SUCCESS);
+}
+
+int
+main(int argc, char **argv)
+{
+	int idx;
+	int c;
+
+#ifdef HAVE_LIBGEN_H
+	prg_name = basename(argv[0]);
+#else
+	prg_name = argv[0];
+#endif /* HAVE_LIBGEN_H */
+
+#if defined(HAVE_GETOPT_LONG) && defined(HAVE_STRUCT_OPTION) 
+	while ((c = getopt_long(argc, argv, "hVi:", long_options, &idx)) != EOF)
+#else
+	while ((c = getopt(argc, argv, "hVi:")) != EOF)
+#endif /* HAVE_GETOPT_LONG && HAVE_STRUCT_OPTION */
+	{
+		switch (c)
+		{
+		case 'h':
+			usage(EXIT_SUCCESS);
+			break;
+		case 'V':
+			version();
+			break;
+		case 'i':
+			inodes = atoi(optarg);
+			break;
+		default:
+			usage(EXIT_FAILURE);
+			break;
+		}
+	}
+
+	if (optind >= argc)
+	{
+		usage(EXIT_FAILURE);
+	}
+
+	device = argv[optind++];
+	if (optind < argc)
+	{
+		blocks = atoi(argv[optind]);
+	}
+
+	return (mkfs());
+}

tools/mkfs/mkfs.stpd.8

@@ -0,0 +1,29 @@
+.Dd $Mdocdate$
+.Dt MKFS.STPD 8
+.Os
+.Sh NAME
+.Nm mkfs.stpd
+.Nd create a Stupid filesystem on a device.
+.Sh SYNOPSIS
+.Nm mkfs.stpd
+.Op Fl V
+.Op Fl h
+.Op Fl i Ar num
+.Ar device
+.Op blocks
+.Sh DESCRIPTION
+.Bl -tag -width Ds
+.It Fl h
+Display help menu.
+.It Fl i
+Number of inodes for the filesystem.
+.It Fl V
+Display version information.
+.El
+.Sh EXIT STATUS
+.Ex -std
+.Sh SEE ALSO
+.Xr stupidfs 3
+.Sh AUTHORS
+.An -nosplit
+.An d0p1 Aq Mt contact@d0p1.eu