C++ (Cpp) extattr_get_fd示例

示例#1

文件： xattr.c 项目： 0day-ci/ceph

ssize_t
ceph_os_fgetxattr(int fd, const char *name, void *value,
    size_t size)
{
	ssize_t error = -1;

#if defined(__FreeBSD__)
	if (value == NULL || size == 0) {
		error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, value,
		    size);
	} else {
		error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, NULL,
		    0);
		if (error > 0) {
			if (error > size) {
				errno = ERANGE;
				error = -1;
			} else  {
				error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER,
				    name, value, size);
			}
		}
	}
#elif defined(__linux__)
	error = fgetxattr(fd, name, value, size);
#elif defined(DARWIN)
	error = fgetxattr(fd, name, value, size, 0, 0 /* no options */);
	/* ENOATTR and ENODATA have different values */
	if (error < 0 && errno == ENOATTR)
		errno = ENODATA;
#endif

	return (error);
}

示例#2

文件： xattr.c 项目： 565407548/ceph

ssize_t
ceph_os_fgetxattr(int fd, const char *name, void *value,
    size_t size)
{
	ssize_t error = -1;

#if defined(__FreeBSD__)
	if (value == NULL || size == 0) {
		error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, value,
		    size);
	} else {
		error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, NULL,
		    0);
		if (error > 0) {
			if (error > size) {
				errno = ERANGE;
				error = -1;
			} else  {
				error = extattr_get_fd(fd, EXTATTR_NAMESPACE_USER,
				    name, value, size);
			}
		}
	}
#elif defined(__linux__)
	error = fgetxattr(fd, name, value, size);
#elif defined(DARWIN)
	error = fgetxattr(fd, name, value, size, 0);
#endif

	return (error);
}

示例#3

文件： xattr.c 项目： rchicoli/samba

ssize_t rep_fgetxattr (int filedes, const char *name, void *value, size_t size)
{
#if defined(HAVE_FGETXATTR)
#ifndef XATTR_ADDITIONAL_OPTIONS
	return fgetxattr(filedes, name, value, size);
#else

/* So that we do not recursivly call this function */
#undef fgetxattr
	int options = 0;
	return fgetxattr(filedes, name, value, size, 0, options);
#endif
#elif defined(HAVE_FGETEA)
	return fgetea(filedes, name, value, size);
#elif defined(HAVE_EXTATTR_GET_FD)
	char *s;
	ssize_t retval;
	int attrnamespace = (strncmp(name, "system", 6) == 0) ? 
		EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
	const char *attrname = ((s=strchr(name, '.')) == NULL) ? name : s + 1;

	if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
		if (size == 0) {
			return retval;
		} else if (retval > size) {
			errno = ERANGE;
			return -1;
		}
		if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
			return retval;
	}

	return -1;
#elif defined(HAVE_ATTR_GETF)
	int retval, flags = 0;
	int valuelength = (int)size;
	char *attrname = strchr(name,'.') + 1;

	if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;

	retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);
	if (size == 0 && retval == -1 && errno == E2BIG) {
		return valuelength;
	}
	return retval ? retval : valuelength;
#elif defined(HAVE_ATTROPEN)
	ssize_t ret = -1;
	int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
	if (attrfd >= 0) {
		ret = solaris_read_xattr(attrfd, value, size);
		close(attrfd);
	}
	return ret;
#else
	errno = ENOSYS;
	return -1;
#endif
}

示例#4

文件： extattr.c 项目： Distrotech/netatalk

ssize_t sys_fgetxattr (int filedes, const char *uname, void *value, size_t size)
{
    const char *name = prefix(uname);

#if defined(HAVE_FGETXATTR)
#ifndef XATTR_ADD_OPT
    return fgetxattr(filedes, name, value, size);
#else
    int options = 0;
    return fgetxattr(filedes, name, value, size, 0, options);
#endif
#elif defined(HAVE_FGETEA)
    return fgetea(filedes, name, value, size);
#elif defined(HAVE_EXTATTR_GET_FD)
    char *s;
    ssize_t retval;
    int attrnamespace = (strncmp(name, "system", 6) == 0) ? 
        EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
    const char *attrname = ((s=strchr(name, '.')) == NULL) ? name : s + 1;

    if((retval=extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0)) >= 0) {
        if(retval > size) {
            errno = ERANGE;
            return -1;
        }
        if((retval=extattr_get_fd(filedes, attrnamespace, attrname, value, size)) >= 0)
            return retval;
    }

    LOG(log_debug, logtype_default, "sys_fgetxattr: extattr_get_fd(): %s", strerror(errno));
    return -1;
#elif defined(HAVE_ATTR_GETF)
    int retval, flags = 0;
    int valuelength = (int)size;
    char *attrname = strchr(name,'.') + 1;

    if (strncmp(name, "system", 6) == 0) flags |= ATTR_ROOT;

    retval = attr_getf(filedes, attrname, (char *)value, &valuelength, flags);

    return retval ? retval : valuelength;
#elif defined(HAVE_ATTROPEN)
    ssize_t ret = -1;
    int attrfd = solaris_openat(filedes, name, O_RDONLY|O_XATTR, 0);
    if (attrfd >= 0) {
        ret = solaris_read_xattr(attrfd, value, size);
        close(attrfd);
    }
    return ret;
#else
    errno = ENOSYS;
    return -1;
#endif
}

示例#5

文件： lib_build.c 项目： xattr/xattr

static ssize_t xattr_fgetxattr(int fd, const char *name, void *value,
                               ssize_t size, u_int32_t position, int options)
{
    if (position != 0 ||
        !(options == 0 || options == XATTR_XATTR_NOFOLLOW)) {
        return -1;
    }

    if (options & XATTR_XATTR_NOFOLLOW) {
        return -1;
    }
    else {
        return extattr_get_fd(fd, EXTATTR_NAMESPACE_USER, name, value, size);
    }
}

示例#6

文件： extattr.c 项目： Netatalk/test-suite

int sys_fsetxattr (int filedes, const char *uname, const void *value, size_t size, int flags)
{
    const char *name = prefix(uname);

#if defined(HAVE_FSETXATTR)
#ifndef XATTR_ADD_OPT
    return fsetxattr(filedes, name, value, size, flags);
#else
    int options = 0;
    return fsetxattr(filedes, name, value, size, 0, options);
#endif
#elif defined(HAVE_FSETEA)
    return fsetea(filedes, name, value, size, flags);
#elif defined(HAVE_EXTATTR_SET_FD)
    char *s;
    int retval = 0;
    int attrnamespace = (strncmp(name, "system", 6) == 0) ? 
        EXTATTR_NAMESPACE_SYSTEM : EXTATTR_NAMESPACE_USER;
    const char *attrname = ((s=strchr(name, '.')) == NULL) ? name : s + 1;
    if (flags) {
        /* Check attribute existence */
        retval = extattr_get_fd(filedes, attrnamespace, attrname, NULL, 0);
        if (retval < 0) {
            /* REPLACE attribute, that doesn't exist */
            if (flags & XATTR_REPLACE && errno == ENOATTR) {
                errno = ENOATTR;
                return -1;
            }
            /* Ignore other errors */
        }
        else {
            if (flags & XATTR_CREATE) {
                errno = EEXIST;
                return -1;
            }
        }
    }
    retval = extattr_set_fd(filedes, attrnamespace, attrname, value, size);
    return (retval < 0) ? -1 : 0;
#elif defined(HAVE_ATTR_SETF)
    int myflags = 0;
    char *attrname = strchr(name,'.') + 1;

    if (strncmp(name, "system", 6) == 0) myflags |= ATTR_ROOT;
    if (flags & XATTR_CREATE) myflags |= ATTR_CREATE;
    if (flags & XATTR_REPLACE) myflags |= ATTR_REPLACE;

    return attr_setf(filedes, attrname, (const char *)value, size, myflags);
#elif defined(HAVE_ATTROPEN)
    int ret = -1;
    int myflags = O_RDWR | O_XATTR;
    int attrfd;
    if (flags & XATTR_CREATE) myflags |= O_EXCL;
    if (!(flags & XATTR_REPLACE)) myflags |= O_CREAT;
    attrfd = solaris_openat(filedes, name, myflags, (mode_t) SOLARIS_ATTRMODE);
    if (attrfd >= 0) {
        ret = solaris_write_xattr(attrfd, value, size);
        close(attrfd);
    }
    return ret;
#else
    errno = ENOSYS;
    return -1;
#endif
}

示例#7

文件： sysxattrs.c 项目： JevonQ/rsync

ssize_t sys_fgetxattr(int filedes, const char *name, void *value, size_t size)
{
	return extattr_get_fd(filedes, EXTATTR_NAMESPACE_USER, name, value, size);
}