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/* $MirOS: contrib/hosted/fwcf/ft_pack.c,v 1.7 2006/09/23 23:21:04 tg Exp $ */
/*-
* Copyright (c) 2006
* Thorsten Glaser <tg@mirbsd.de>
*
* Licensee is hereby permitted to deal in this work without restric-
* tion, including unlimited rights to use, publicly perform, modify,
* merge, distribute, sell, give away or sublicence, provided all co-
* pyright notices above, these terms and the disclaimer are retained
* in all redistributions or reproduced in accompanying documentation
* or other materials provided with binary redistributions.
*
* Licensor offers the work "AS IS" and WITHOUT WARRANTY of any kind,
* express, or implied, to the maximum extent permitted by applicable
* law, without malicious intent or gross negligence; in no event may
* licensor, an author or contributor be held liable for any indirect
* or other damage, or direct damage except proven a consequence of a
* direct error of said person and intended use of this work, loss or
* other issues arising in any way out of its use, even if advised of
* the possibility of such damage or existence of a defect.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "defs.h"
#include "fts_subs.h"
#include "pack.h"
__RCSID("$MirOS: contrib/hosted/fwcf/ft_pack.c,v 1.7 2006/09/23 23:21:04 tg Exp $");
char *
ft_pack(ftsf_entry *e)
{
char f_header[4096], *hdrptr = f_header;
size_t hdrleft = sizeof (f_header), k;
char *f_data = NULL, *rv;
off_t e_size;
if (e == NULL)
return (NULL);
if ((e->etype != FTSF_FILE) && (e->etype != FTSF_SYMLINK) &&
(e->etype != FTSF_DIR))
return (NULL);
e_size = e->statp->st_size;
if ((k = strlcpy(hdrptr, e->pathname, hdrleft)) >= hdrleft)
return (NULL);
hdrptr += ++k;
hdrleft -= k;
if (e->etype == FTSF_SYMLINK) {
STOREB(0x03);
e->statp->st_mtime = 0;
e->statp->st_mode = 0;
} else if (e->etype == FTSF_DIR) {
STOREB(0x05);
e_size = 0;
}
if (e->statp->st_mtime) {
STOREB(0x10);
STORED(e->statp->st_mtime);
}
if (e->statp->st_gid > 0xFF) {
STOREB('G');
STORED(e->statp->st_gid);
} else if (e->statp->st_gid) {
STOREB('g');
STOREB(e->statp->st_gid);
}
if (e->statp->st_mode > 0xFFFF) {
STOREB('M');
STORED(e->statp->st_mode);
} else if (e->statp->st_mode) {
STOREB('m');
STOREW(e->statp->st_mode);
}
if (e->statp->st_uid > 0xFF) {
STOREB('U');
STORED(e->statp->st_uid);
} else if (e->statp->st_uid) {
STOREB('u');
STOREB(e->statp->st_uid);
}
/* e_size is zero for everything except files and symlinks */
if (e_size > 0xFF) {
STOREB('S');
STORET(e_size);
} else if (e_size) {
STOREB('s');
STOREB(e_size);
}
STOREB(0);
if (e_size) {
if ((f_data = malloc(e_size)) == NULL)
return (NULL);
if (asprintf(&rv, "%s/%s", ftsf_prefix, e->pathname) == -1)
return (NULL);
if (e->etype == FTSF_SYMLINK) {
if (readlink(rv, f_data, e_size) != e_size)
return (NULL);
} else {
int fd;
if ((fd = open(rv, O_RDONLY, 0)) < 0)
return (NULL);
if (read(fd, f_data, e_size) != e_size)
return (NULL);
close(fd);
}
free(rv);
}
k = sizeof (size_t) + (hdrptr - f_header) + e_size;
if ((rv = malloc(k)) == NULL)
return (NULL);
*(size_t *)rv = k;
memcpy(rv + sizeof (size_t), f_header, hdrptr - f_header);
memcpy(rv + sizeof (size_t) + (hdrptr - f_header), f_data, e_size);
return (rv);
}
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