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xattr.c
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xattr.c
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/**
* Copyright (c) 2005 - 2011 Miek Gieben
* See LICENSE for the license
*
* Not used anymore - this is a hack that I don't want to
* support anymore. It stinks
*
* It was used in saving the uid/gid information when doing
* a remote dump as a no root user.
*
* All xattr functions are grouped here
*/
#include "rdup.h"
extern gint opt_verbose;
uid_t
read_attr_uid(__attribute__((unused))
char *path, uid_t u)
{
#ifdef HAVE_ATTR_XATTR_H
/* linux */
char buf[ATTR_SIZE + 1];
uid_t x;
int r;
if ((r = lgetxattr(path, "user.r_uid", buf, ATTR_SIZE)) > 0) {
x = (uid_t)atoi(buf);
buf[r - 1] = '\0';
if (x > R_MAX_ID) {
msg(_("Too large uid `%zd\' for `%s\', truncating"), (size_t)x,
path);
return R_MAX_ID;
}
return x;
} else {
if (opt_verbose > 0) {
msg(_("No uid xattr for `%s\'"), path);
}
return u;
}
#elif HAVE_ATTROPEN
/* solaris */
char buf[ATTR_SIZE + 1];
uid_t x;
int attfd;
int r;
if ((attfd = attropen(path, "r_uid", O_RDONLY)) == -1) {
if (opt_verbose > 0) {
msg(_("No uid xattr for `%s\'"), path);
}
return u;
}
if ((r = read(attfd, buf, ATTR_SIZE)) == -1) {
return u;
}
close(attfd);
buf[r - 1] = '\0';
x = (uid_t)atoi(buf);
if (x > R_MAX_ID) {
msg(_("Too large gid `%zd\' for `%s\', truncating"), (size_t)x, path);
return R_MAX_ID;
}
return x;
#else
return u;
#endif /* HAVE_ATTR_XATTR_H, HAVE_ATTROPEN */
}
gid_t
read_attr_gid(__attribute__((unused))
char *path, gid_t g)
{
#ifdef HAVE_ATTR_XATTR_H
char buf[ATTR_SIZE + 1];
gid_t x;
int r;
if ((r = lgetxattr(path, "user.r_gid", buf, ATTR_SIZE)) > 0) {
buf[r - 1] = '\0';
x = (gid_t)atoi(buf);
if (x > R_MAX_ID) {
msg(_("Too large gid `%zd\' for `%s\', truncating"), (size_t)x,
path);
return R_MAX_ID;
}
return x;
} else {
if (opt_verbose > 0) {
msg(_("No gid xattr for `%s\'"), path);
}
return g;
}
#elif HAVE_ATTROPEN
/* solaris */
char buf[ATTR_SIZE + 1];
gid_t x;
int attfd;
int r;
if ((attfd = attropen(path, "r_gid", O_RDONLY)) == -1) {
if (opt_verbose > 0) {
msg(_("No gid xattr for `%s\'"), path);
}
return g;
}
if ((r = read(attfd, buf, ATTR_SIZE)) == -1) {
return g;
}
close(attfd);
buf[r - 1] = '\0';
x = (uid_t)atoi(buf);
if (x > R_MAX_ID) {
msg(_("Too large gid `%zd\' for `%s\', truncating"), (size_t)x, path);
return R_MAX_ID;
}
return x;
#else
return g;
#endif /* HAVE_ATTR_XATTR_H, HAVE_ATTROPEN */
}