src/AmigaOS/extfs_amiga.cpp

/*
 *  extfs_amiga.cpp - MacOS file system for access native file system access, AmigaOS specific stuff
 *
 *  Basilisk II (C) 1997-2001 Christian Bauer
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <exec/types.h>
#include <proto/dos.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <errno.h>

#include "sysdeps.h"
#include "extfs.h"
#include "extfs_defs.h"

#define DEBUG 0
#include "debug.h"


// Default Finder flags
const uint16 DEFAULT_FINDER_FLAGS = kHasBeenInited;


/*
 *  Initialization
 */

void extfs_init(void)
{
}


/*
 *  Deinitialization
 */

void extfs_exit(void)
{
}


/*
 *  Add component to path name
 */

void add_path_component(char *path, const char *component)
{
        AddPart(path, (char *)component, MAX_PATH_LENGTH);
}


/*
 *  Finder info and resource forks are kept in helper files
 *
 *  Finder info:
 *    /path/.finf/file
 *  Resource fork:
 *    /path/.rsrc/file
 *
 *  The .finf files store a FInfo/DInfo, followed by a FXInfo/DXInfo
 *  (16+16 bytes)
 */

static void make_helper_path(const char *src, char *dest, const char *add, bool only_dir = false)
{
        dest[0] = 0;

        // Get pointer to last component of path
        const char *last_part = FilePart((char *)src);

        // Copy everything before
        strncpy(dest, src, last_part-src);
        dest[last_part-src] = 0;

        // Add additional component
        AddPart(dest, (char *)add, MAX_PATH_LENGTH);

        // Add last component
        if (!only_dir)
                AddPart(dest, (char *)last_part, MAX_PATH_LENGTH);
}

static int create_helper_dir(const char *path, const char *add)
{
        char helper_dir[MAX_PATH_LENGTH];
        make_helper_path(path, helper_dir, add, true);
        if (helper_dir[strlen(helper_dir) - 1] == '/')  // Remove trailing "/"
                helper_dir[strlen(helper_dir) - 1] = 0;
        return mkdir(helper_dir, 0777);
}

static int open_helper(const char *path, const char *add, int flag)
{
        char helper_path[MAX_PATH_LENGTH];
        make_helper_path(path, helper_path, add);

        if ((flag & O_ACCMODE) == O_RDWR || (flag & O_ACCMODE) == O_WRONLY)
                flag |= O_CREAT;
        int fd = open(helper_path, flag, 0666);
        if (fd < 0) {
                if (errno == ENOENT && (flag & O_CREAT)) {
                        // One path component was missing, probably the helper
                        // directory. Try to create it and re-open the file.
                        int ret = create_helper_dir(path, add);
                        if (ret < 0)
                                return ret;
                        fd = open(helper_path, flag, 0666);
                }
        }
        return fd;
}

static int open_finf(const char *path, int flag)
{
        return open_helper(path, ".finf/", flag);
}

static int open_rsrc(const char *path, int flag)
{
        return open_helper(path, ".rsrc/", flag);
}


/*
 *  Get/set finder type/creator for file specified by full path
 */

struct ext2type {
        const char *ext;
        uint32 type;
        uint32 creator;
};

static const ext2type e2t_translation[] = {
        {".z", FOURCC('Z','I','V','M'), FOURCC('L','Z','I','V')},
        {".gz", FOURCC('G','z','i','p'), FOURCC('G','z','i','p')},
        {".hqx", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
        {".bin", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
        {".pdf", FOURCC('P','D','F',' '), FOURCC('C','A','R','O')},
        {".ps", FOURCC('T','E','X','T'), FOURCC('t','t','x','t')},
        {".sit", FOURCC('S','I','T','!'), FOURCC('S','I','T','x')},
        {".tar", FOURCC('T','A','R','F'), FOURCC('T','A','R',' ')},
        {".uu", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
        {".uue", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
        {".zip", FOURCC('Z','I','P',' '), FOURCC('Z','I','P',' ')},
        {".8svx", FOURCC('8','S','V','X'), FOURCC('S','N','D','M')},
        {".aifc", FOURCC('A','I','F','C'), FOURCC('T','V','O','D')},
        {".aiff", FOURCC('A','I','F','F'), FOURCC('T','V','O','D')},
        {".au", FOURCC('U','L','A','W'), FOURCC('T','V','O','D')},
        {".mid", FOURCC('M','I','D','I'), FOURCC('T','V','O','D')},
        {".midi", FOURCC('M','I','D','I'), FOURCC('T','V','O','D')},
        {".mp2", FOURCC('M','P','G',' '), FOURCC('T','V','O','D')},
        {".mp3", FOURCC('M','P','G',' '), FOURCC('T','V','O','D')},
        {".wav", FOURCC('W','A','V','E'), FOURCC('T','V','O','D')},
        {".bmp", FOURCC('B','M','P','f'), FOURCC('o','g','l','e')},
        {".gif", FOURCC('G','I','F','f'), FOURCC('o','g','l','e')},
        {".lbm", FOURCC('I','L','B','M'), FOURCC('G','K','O','N')},
        {".ilbm", FOURCC('I','L','B','M'), FOURCC('G','K','O','N')},
        {".jpg", FOURCC('J','P','E','G'), FOURCC('o','g','l','e')},
        {".jpeg", FOURCC('J','P','E','G'), FOURCC('o','g','l','e')},
        {".pict", FOURCC('P','I','C','T'), FOURCC('o','g','l','e')},
        {".png", FOURCC('P','N','G','f'), FOURCC('o','g','l','e')},
        {".sgi", FOURCC('.','S','G','I'), FOURCC('o','g','l','e')},
        {".tga", FOURCC('T','P','I','C'), FOURCC('o','g','l','e')},
        {".tif", FOURCC('T','I','F','F'), FOURCC('o','g','l','e')},
        {".tiff", FOURCC('T','I','F','F'), FOURCC('o','g','l','e')},
        {".htm", FOURCC('T','E','X','T'), FOURCC('M','O','S','S')},
        {".html", FOURCC('T','E','X','T'), FOURCC('M','O','S','S')},
        {".txt", FOURCC('T','E','X','T'), FOURCC('t','t','x','t')},
        {".rtf", FOURCC('T','E','X','T'), FOURCC('M','S','W','D')},
        {".c", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".cc", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".cpp", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".cxx", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".h", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".hh", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".hpp", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".hxx", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".s", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".i", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
        {".mpg", FOURCC('M','P','E','G'), FOURCC('T','V','O','D')},
        {".mpeg", FOURCC('M','P','E','G'), FOURCC('T','V','O','D')},
        {".mov", FOURCC('M','o','o','V'), FOURCC('T','V','O','D')},
        {".fli", FOURCC('F','L','I',' '), FOURCC('T','V','O','D')},
        {".avi", FOURCC('V','f','W',' '), FOURCC('T','V','O','D')},
        {".qxd", FOURCC('X','D','O','C'), FOURCC('X','P','R','3')},
        {".hfv", FOURCC('D','D','i','m'), FOURCC('d','d','s','k')},
        {".dsk", FOURCC('D','D','i','m'), FOURCC('d','d','s','k')},
        {".img", FOURCC('r','o','h','d'), FOURCC('d','d','s','k')},
        {NULL, 0, 0}    // End marker
};

void get_finfo(const char *path, uint32 finfo, uint32 fxinfo)
{
        // Set default finder info
        Mac_memset(finfo, 0, SIZEOF_FInfo);
        if (fxinfo)
                Mac_memset(fxinfo, 0, SIZEOF_FXInfo);
        WriteMacInt16(finfo + fdFlags, DEFAULT_FINDER_FLAGS);
        WriteMacInt32(finfo + fdLocation, (uint32)-1);

        // Read Finder info file
        int fd = open_finf(path, O_RDONLY);
        if (fd >= 0) {
                ssize_t actual = read(fd, Mac2HostAddr(finfo), SIZEOF_FInfo);
                if (fxinfo)
                        actual += read(fd, Mac2HostAddr(fxinfo), SIZEOF_FXInfo);
                close(fd);
                if (actual >= SIZEOF_FInfo)
                        return;
        }

        // No Finder info file, translate file name extension to MacOS type/creator
        struct stat st;
        if (stat(path, &st) == 0 && !S_ISDIR(st.st_mode)) {
                int path_len = strlen(path);
                for (int i=0; e2t_translation[i].ext; i++) {
                        int ext_len = strlen(e2t_translation[i].ext);
                        if (path_len < ext_len)
                                continue;
                        if (!strcasecmp(path + path_len - ext_len, e2t_translation[i].ext)) {
                                WriteMacInt32(finfo + fdType, e2t_translation[i].type);
                                WriteMacInt32(finfo + fdCreator, e2t_translation[i].creator);
                                break;
                        }
                }
        }
}

void set_finfo(const char *path, uint32 finfo, uint32 fxinfo)
{
        // Open Finder info file
        int fd = open_finf(path, O_RDWR);
        if (fd < 0)
                return;

        // Write file
        write(fd, Mac2HostAddr(finfo), SIZEOF_FInfo);
        if (fxinfo)
                write(fd, Mac2HostAddr(fxinfo), SIZEOF_FXInfo);
        close(fd);
}


/*
 *  Resource fork emulation functions
 */

uint32 get_rfork_size(const char *path)
{
        // Open resource file
        int fd = open_rsrc(path, O_RDONLY);
        if (fd < 0)
                return 0;

        // Get size
        off_t size = lseek(fd, 0, SEEK_END);
        
        // Close file and return size
        close(fd);
        return size < 0 ? 0 : size;
}

int open_rfork(const char *path, int flag)
{
        return open_rsrc(path, flag);
}

void close_rfork(const char *path, int fd)
{
        close(fd);
}


/*
 *  Read "length" bytes from file to "buffer",
 *  returns number of bytes read (or -1 on error)
 */

ssize_t extfs_read(int fd, void *buffer, size_t length)
{
        return read(fd, buffer, length);
}


/*
 *  Write "length" bytes from "buffer" to file,
 *  returns number of bytes written (or -1 on error)
 */

ssize_t extfs_write(int fd, void *buffer, size_t length)
{
        return write(fd, buffer, length);
}


/*
 *  Remove file/directory (and associated helper files),
 *  returns false on error (and sets errno)
 */

bool extfs_remove(const char *path)
{
        // Remove helpers first, don't complain if this fails
        char helper_path[MAX_PATH_LENGTH];
        make_helper_path(path, helper_path, ".finf/", false);
        remove(helper_path);
        make_helper_path(path, helper_path, ".rsrc/", false);
        remove(helper_path);

        // Now remove file or directory (and helper directories in the directory)
        if (remove(path) < 0) {
                if (errno == EISDIR || errno == ENOTEMPTY) {
                        helper_path[0] = 0;
                        strncpy(helper_path, path, MAX_PATH_LENGTH-1);
                        add_path_component(helper_path, ".finf");
                        rmdir(helper_path);
                        helper_path[0] = 0;
                        strncpy(helper_path, path, MAX_PATH_LENGTH-1);
                        add_path_component(helper_path, ".rsrc");
                        rmdir(helper_path);
                        return rmdir(path) == 0;
                } else
                        return false;
        }
        return true;
}


/*
 *  Rename/move file/directory (and associated helper files),
 *  returns false on error (and sets errno)
 */

bool extfs_rename(const char *old_path, const char *new_path)
{
        // Rename helpers first, don't complain if this fails
        char old_helper_path[MAX_PATH_LENGTH], new_helper_path[MAX_PATH_LENGTH];
        make_helper_path(old_path, old_helper_path, ".finf/", false);
        make_helper_path(new_path, new_helper_path, ".finf/", false);
        create_helper_dir(new_path, ".finf/");
        rename(old_helper_path, new_helper_path);
        make_helper_path(old_path, old_helper_path, ".rsrc/", false);
        make_helper_path(new_path, new_helper_path, ".rsrc/", false);
        create_helper_dir(new_path, ".rsrc/");
        rename(old_helper_path, new_helper_path);

        // Now rename file
        return rename(old_path, new_path) == 0;
}


/*
 *  ftruncate() is missing from libnix
 */

extern unsigned long *__stdfiledes;

int ftruncate(int fd, off_t size)
{
        if (SetFileSize(__stdfiledes[fd], size, OFFSET_BEGINNING) < 0)
                return -1;
        else
                return 0;
}
Revision:	1.11
Committed:	2001-02-02T20:52:57Z (23 years, 9 months ago) by cebix
Branch:	MAIN
CVS Tags:	snapshot-17022001
Changes since 1.10:	+1 -1 lines
Log Message:	- bumped version number to 0.9 - updated copyright dates
#	User	Rev	Content
1	cebix	1.1	/*
2			* extfs_amiga.cpp - MacOS file system for access native file system access, AmigaOS specific stuff
3			*
4	cebix	1.11	* Basilisk II (C) 1997-2001 Christian Bauer
5	cebix	1.1	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19			*/
20
21			#include <exec/types.h>
22			#include <proto/dos.h>
23
24			#include <sys/types.h>
25			#include <sys/stat.h>
26			#include <stdio.h>
27			#include <stdlib.h>
28			#include <unistd.h>
29			#include <fcntl.h>
30			#include <dirent.h>
31			#include <errno.h>
32
33			#include "sysdeps.h"
34			#include "extfs.h"
35			#include "extfs_defs.h"
36
37			#define DEBUG 0
38			#include "debug.h"
39
40
41			// Default Finder flags
42			const uint16 DEFAULT_FINDER_FLAGS = kHasBeenInited;
43
44
45			/*
46			* Initialization
47			*/
48
49			void extfs_init(void)
50			{
51			}
52
53
54			/*
55			* Deinitialization
56			*/
57
58			void extfs_exit(void)
59			{
60			}
61
62
63			/*
64			* Add component to path name
65			*/
66
67			void add_path_component(char path, const char component)
68			{
69			AddPart(path, (char *)component, MAX_PATH_LENGTH);
70			}
71
72
73			/*
74			* Finder info and resource forks are kept in helper files
75			*
76			* Finder info:
77			* /path/.finf/file
78			* Resource fork:
79			* /path/.rsrc/file
80	cebix	1.8	*
81			* The .finf files store a FInfo/DInfo, followed by a FXInfo/DXInfo
82			* (16+16 bytes)
83	cebix	1.1	*/
84
85			static void make_helper_path(const char src, char dest, const char *add, bool only_dir = false)
86			{
87			dest[0] = 0;
88
89			// Get pointer to last component of path
90			const char last_part = FilePart((char )src);
91
92			// Copy everything before
93			strncpy(dest, src, last_part-src);
94			dest[last_part-src] = 0;
95
96			// Add additional component
97			AddPart(dest, (char *)add, MAX_PATH_LENGTH);
98
99			// Add last component
100			if (!only_dir)
101			AddPart(dest, (char *)last_part, MAX_PATH_LENGTH);
102			}
103
104			static int create_helper_dir(const char path, const char add)
105			{
106			char helper_dir[MAX_PATH_LENGTH];
107			make_helper_path(path, helper_dir, add, true);
108	cebix	1.8	if (helper_dir[strlen(helper_dir) - 1] == '/') // Remove trailing "/"
109			helper_dir[strlen(helper_dir) - 1] = 0;
110	cebix	1.1	return mkdir(helper_dir, 0777);
111			}
112
113			static int open_helper(const char path, const char add, int flag)
114			{
115			char helper_path[MAX_PATH_LENGTH];
116			make_helper_path(path, helper_path, add);
117
118	cebix	1.2	if ((flag & O_ACCMODE) == O_RDWR \|\| (flag & O_ACCMODE) == O_WRONLY)
119	cebix	1.1	flag \|= O_CREAT;
120			int fd = open(helper_path, flag, 0666);
121			if (fd < 0) {
122			if (errno == ENOENT && (flag & O_CREAT)) {
123			// One path component was missing, probably the helper
124			// directory. Try to create it and re-open the file.
125			int ret = create_helper_dir(path, add);
126			if (ret < 0)
127			return ret;
128			fd = open(helper_path, flag, 0666);
129			}
130			}
131			return fd;
132			}
133
134			static int open_finf(const char *path, int flag)
135			{
136			return open_helper(path, ".finf/", flag);
137			}
138
139			static int open_rsrc(const char *path, int flag)
140			{
141			return open_helper(path, ".rsrc/", flag);
142			}
143
144
145			/*
146			* Get/set finder type/creator for file specified by full path
147			*/
148
149			struct ext2type {
150			const char *ext;
151			uint32 type;
152			uint32 creator;
153			};
154
155			static const ext2type e2t_translation[] = {
156	cebix	1.9	{".z", FOURCC('Z','I','V','M'), FOURCC('L','Z','I','V')},
157			{".gz", FOURCC('G','z','i','p'), FOURCC('G','z','i','p')},
158			{".hqx", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
159	cebix	1.10	{".bin", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
160	cebix	1.9	{".pdf", FOURCC('P','D','F',' '), FOURCC('C','A','R','O')},
161			{".ps", FOURCC('T','E','X','T'), FOURCC('t','t','x','t')},
162			{".sit", FOURCC('S','I','T','!'), FOURCC('S','I','T','x')},
163			{".tar", FOURCC('T','A','R','F'), FOURCC('T','A','R',' ')},
164			{".uu", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
165			{".uue", FOURCC('T','E','X','T'), FOURCC('S','I','T','x')},
166			{".zip", FOURCC('Z','I','P',' '), FOURCC('Z','I','P',' ')},
167			{".8svx", FOURCC('8','S','V','X'), FOURCC('S','N','D','M')},
168			{".aifc", FOURCC('A','I','F','C'), FOURCC('T','V','O','D')},
169			{".aiff", FOURCC('A','I','F','F'), FOURCC('T','V','O','D')},
170			{".au", FOURCC('U','L','A','W'), FOURCC('T','V','O','D')},
171			{".mid", FOURCC('M','I','D','I'), FOURCC('T','V','O','D')},
172			{".midi", FOURCC('M','I','D','I'), FOURCC('T','V','O','D')},
173			{".mp2", FOURCC('M','P','G',' '), FOURCC('T','V','O','D')},
174			{".mp3", FOURCC('M','P','G',' '), FOURCC('T','V','O','D')},
175			{".wav", FOURCC('W','A','V','E'), FOURCC('T','V','O','D')},
176			{".bmp", FOURCC('B','M','P','f'), FOURCC('o','g','l','e')},
177			{".gif", FOURCC('G','I','F','f'), FOURCC('o','g','l','e')},
178			{".lbm", FOURCC('I','L','B','M'), FOURCC('G','K','O','N')},
179			{".ilbm", FOURCC('I','L','B','M'), FOURCC('G','K','O','N')},
180			{".jpg", FOURCC('J','P','E','G'), FOURCC('o','g','l','e')},
181			{".jpeg", FOURCC('J','P','E','G'), FOURCC('o','g','l','e')},
182			{".pict", FOURCC('P','I','C','T'), FOURCC('o','g','l','e')},
183			{".png", FOURCC('P','N','G','f'), FOURCC('o','g','l','e')},
184			{".sgi", FOURCC('.','S','G','I'), FOURCC('o','g','l','e')},
185			{".tga", FOURCC('T','P','I','C'), FOURCC('o','g','l','e')},
186			{".tif", FOURCC('T','I','F','F'), FOURCC('o','g','l','e')},
187			{".tiff", FOURCC('T','I','F','F'), FOURCC('o','g','l','e')},
188			{".htm", FOURCC('T','E','X','T'), FOURCC('M','O','S','S')},
189			{".html", FOURCC('T','E','X','T'), FOURCC('M','O','S','S')},
190			{".txt", FOURCC('T','E','X','T'), FOURCC('t','t','x','t')},
191			{".rtf", FOURCC('T','E','X','T'), FOURCC('M','S','W','D')},
192			{".c", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
193			{".cc", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
194			{".cpp", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
195			{".cxx", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
196			{".h", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
197			{".hh", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
198			{".hpp", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
199			{".hxx", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
200			{".s", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
201			{".i", FOURCC('T','E','X','T'), FOURCC('R','*','c','h')},
202			{".mpg", FOURCC('M','P','E','G'), FOURCC('T','V','O','D')},
203			{".mpeg", FOURCC('M','P','E','G'), FOURCC('T','V','O','D')},
204			{".mov", FOURCC('M','o','o','V'), FOURCC('T','V','O','D')},
205			{".fli", FOURCC('F','L','I',' '), FOURCC('T','V','O','D')},
206			{".avi", FOURCC('V','f','W',' '), FOURCC('T','V','O','D')},
207			{".qxd", FOURCC('X','D','O','C'), FOURCC('X','P','R','3')},
208			{".hfv", FOURCC('D','D','i','m'), FOURCC('d','d','s','k')},
209			{".dsk", FOURCC('D','D','i','m'), FOURCC('d','d','s','k')},
210			{".img", FOURCC('r','o','h','d'), FOURCC('d','d','s','k')},
211	cebix	1.1	{NULL, 0, 0} // End marker
212			};
213
214	cebix	1.8	void get_finfo(const char *path, uint32 finfo, uint32 fxinfo)
215	cebix	1.1	{
216	cebix	1.8	// Set default finder info
217			Mac_memset(finfo, 0, SIZEOF_FInfo);
218			if (fxinfo)
219			Mac_memset(fxinfo, 0, SIZEOF_FXInfo);
220			WriteMacInt16(finfo + fdFlags, DEFAULT_FINDER_FLAGS);
221			WriteMacInt32(finfo + fdLocation, (uint32)-1);
222	cebix	1.1
223	cebix	1.8	// Read Finder info file
224	cebix	1.1	int fd = open_finf(path, O_RDONLY);
225			if (fd >= 0) {
226	cebix	1.8	ssize_t actual = read(fd, Mac2HostAddr(finfo), SIZEOF_FInfo);
227			if (fxinfo)
228			actual += read(fd, Mac2HostAddr(fxinfo), SIZEOF_FXInfo);
229			close(fd);
230			if (actual >= SIZEOF_FInfo)
231	cebix	1.1	return;
232			}
233
234			// No Finder info file, translate file name extension to MacOS type/creator
235	cebix	1.8	struct stat st;
236			if (stat(path, &st) == 0 && !S_ISDIR(st.st_mode)) {
237			int path_len = strlen(path);
238			for (int i=0; e2t_translation[i].ext; i++) {
239			int ext_len = strlen(e2t_translation[i].ext);
240			if (path_len < ext_len)
241			continue;
242			if (!strcasecmp(path + path_len - ext_len, e2t_translation[i].ext)) {
243			WriteMacInt32(finfo + fdType, e2t_translation[i].type);
244			WriteMacInt32(finfo + fdCreator, e2t_translation[i].creator);
245			break;
246			}
247	cebix	1.1	}
248			}
249			}
250
251	cebix	1.8	void set_finfo(const char *path, uint32 finfo, uint32 fxinfo)
252	cebix	1.1	{
253			// Open Finder info file
254			int fd = open_finf(path, O_RDWR);
255			if (fd < 0)
256			return;
257
258	cebix	1.8	// Write file
259			write(fd, Mac2HostAddr(finfo), SIZEOF_FInfo);
260			if (fxinfo)
261			write(fd, Mac2HostAddr(fxinfo), SIZEOF_FXInfo);
262	cebix	1.1	close(fd);
263			}
264
265
266			/*
267			* Resource fork emulation functions
268			*/
269
270			uint32 get_rfork_size(const char *path)
271			{
272			// Open resource file
273			int fd = open_rsrc(path, O_RDONLY);
274			if (fd < 0)
275			return 0;
276
277			// Get size
278			off_t size = lseek(fd, 0, SEEK_END);
279
280			// Close file and return size
281			close(fd);
282			return size < 0 ? 0 : size;
283			}
284
285			int open_rfork(const char *path, int flag)
286			{
287			return open_rsrc(path, flag);
288			}
289
290			void close_rfork(const char *path, int fd)
291			{
292			close(fd);
293			}
294
295
296			/*
297			* Read "length" bytes from file to "buffer",
298	cebix	1.5	* returns number of bytes read (or -1 on error)
299	cebix	1.1	*/
300
301	cebix	1.5	ssize_t extfs_read(int fd, void *buffer, size_t length)
302	cebix	1.1	{
303			return read(fd, buffer, length);
304			}
305
306
307			/*
308			* Write "length" bytes from "buffer" to file,
309	cebix	1.5	* returns number of bytes written (or -1 on error)
310	cebix	1.1	*/
311
312	cebix	1.5	ssize_t extfs_write(int fd, void *buffer, size_t length)
313	cebix	1.1	{
314			return write(fd, buffer, length);
315			}
316
317
318			/*
319	cebix	1.3	* Remove file/directory (and associated helper files),
320			* returns false on error (and sets errno)
321			*/
322
323			bool extfs_remove(const char *path)
324			{
325			// Remove helpers first, don't complain if this fails
326			char helper_path[MAX_PATH_LENGTH];
327			make_helper_path(path, helper_path, ".finf/", false);
328			remove(helper_path);
329			make_helper_path(path, helper_path, ".rsrc/", false);
330			remove(helper_path);
331
332	cebix	1.4	// Now remove file or directory (and helper directories in the directory)
333	cebix	1.3	if (remove(path) < 0) {
334	cebix	1.4	if (errno == EISDIR \|\| errno == ENOTEMPTY) {
335			helper_path[0] = 0;
336			strncpy(helper_path, path, MAX_PATH_LENGTH-1);
337			add_path_component(helper_path, ".finf");
338			rmdir(helper_path);
339			helper_path[0] = 0;
340			strncpy(helper_path, path, MAX_PATH_LENGTH-1);
341			add_path_component(helper_path, ".rsrc");
342			rmdir(helper_path);
343	cebix	1.3	return rmdir(path) == 0;
344	cebix	1.4	} else
345	cebix	1.3	return false;
346			}
347			return true;
348	cebix	1.4	}
349
350
351			/*
352			* Rename/move file/directory (and associated helper files),
353			* returns false on error (and sets errno)
354			*/
355
356			bool extfs_rename(const char old_path, const char new_path)
357			{
358			// Rename helpers first, don't complain if this fails
359			char old_helper_path[MAX_PATH_LENGTH], new_helper_path[MAX_PATH_LENGTH];
360			make_helper_path(old_path, old_helper_path, ".finf/", false);
361			make_helper_path(new_path, new_helper_path, ".finf/", false);
362			create_helper_dir(new_path, ".finf/");
363			rename(old_helper_path, new_helper_path);
364			make_helper_path(old_path, old_helper_path, ".rsrc/", false);
365			make_helper_path(new_path, new_helper_path, ".rsrc/", false);
366			create_helper_dir(new_path, ".rsrc/");
367			rename(old_helper_path, new_helper_path);
368
369			// Now rename file
370			return rename(old_path, new_path) == 0;
371	cebix	1.3	}
372
373
374			/*
375	cebix	1.1	* ftruncate() is missing from libnix
376			*/
377
378			extern unsigned long *__stdfiledes;
379
380			int ftruncate(int fd, off_t size)
381			{
382			if (SetFileSize(__stdfiledes[fd], size, OFFSET_BEGINNING) < 0)
383			return -1;
384			else
385			return 0;
386			}