wip mount() NetBSD emulation
This commit is contained in:
Jean-Baptiste Boric
parent
a32bbb008e
commit
5084102fbc
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@ -11,7 +11,7 @@ SRCS+= accept.c access.c adjtime.c bind.c brk.c sbrk.c m_closefrom.c getsid.c \
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getsockopt.c setsockopt.c gettimeofday.c geteuid.c getuid.c \
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getsockopt.c setsockopt.c gettimeofday.c geteuid.c getuid.c \
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getvfsstat.c \
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getvfsstat.c \
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ioctl.c issetugid.c kill.c link.c listen.c loadname.c lseek.c \
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ioctl.c issetugid.c kill.c link.c listen.c loadname.c lseek.c \
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minix_rs.c mkdir.c mkfifo.c mknod.c mmap.c mount.c nanosleep.c \
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minix_mount.c minix_rs.c mkdir.c mkfifo.c mknod.c mmap.c mount.c nanosleep.c \
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open.c pathconf.c pipe.c poll.c posix_spawn.c pread.c ptrace.c pwrite.c \
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open.c pathconf.c pipe.c poll.c posix_spawn.c pread.c ptrace.c pwrite.c \
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read.c readlink.c reboot.c recvfrom.c recvmsg.c rename.c \
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read.c readlink.c reboot.c recvfrom.c recvmsg.c rename.c \
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rmdir.c select.c sem.c sendmsg.c sendto.c setgroups.c setsid.c \
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rmdir.c select.c sem.c sendmsg.c sendto.c setgroups.c setsid.c \
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232
minix/lib/libc/sys/minix_mount.c
Normal file
232
minix/lib/libc/sys/minix_mount.c
Normal file
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@ -0,0 +1,232 @@
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#include <sys/cdefs.h>
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#include "namespace.h"
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#include <lib.h>
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#include <string.h>
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#include <sys/mount.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <minix/paths.h>
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#include <minix/rs.h>
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#include <minix/syslib.h>
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#include <unistd.h>
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#define OK 0
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#define FSDEFAULT "mfs"
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static char fspath[] = "/service/:/usr/pkg/service/"; /* Must include trailing '/' */
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static int rs_down(char *label)
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{
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char cmd[200];
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if(strlen(_PATH_SERVICE)+strlen(label)+50 >= sizeof(cmd))
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return -1;
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sprintf(cmd, _PATH_SERVICE " down '%s'", label);
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return system(cmd);
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}
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char *find_rslabel(char *args_line);
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int minix_mount(char *special, char *name, int mountflags, int srvflags,
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char *type, char *args)
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{
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int r;
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message m;
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struct stat statbuf;
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char label[MNT_LABEL_LEN];
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char path[PATH_MAX];
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char cmd[200];
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char *p;
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char *rslabel;
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int reuse = 0;
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int use_existing = 0;
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/* Default values. */
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if (type == NULL) type = __UNCONST(FSDEFAULT);
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if (args == NULL) args = __UNCONST("");
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reuse = 0;
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memset(path, '\0', sizeof(path));
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/* Check service flags. */
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if(srvflags & MS_REUSE)
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reuse = 1;
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if(srvflags & MS_EXISTING)
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use_existing = 1;
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/* Make a label for the file system process. This label must be unique and
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* may currently not exceed 16 characters including terminating null. For
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* requests with an associated block device, we use the last path component
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* name of the block special file (truncated to 12 characters, which is
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* hopefully enough). For requests with no associated block device, we use
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* the device number and inode of the mount point, in hexadecimal form.
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*/
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if (!use_existing) {
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if (special) {
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p = strrchr(special, '/');
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p = p ? p + 1 : special;
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if (strchr(p, '\'')) {
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errno = EINVAL;
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return -1;
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}
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snprintf(label, MNT_LABEL_LEN, "fs_%.12s", p);
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} else {
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/* check for a rslabel option in the arguments and try to use
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* that.
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*/
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rslabel = find_rslabel(args);
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if (rslabel != NULL){
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snprintf(label, MNT_LABEL_LEN, "%s", rslabel);
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free(rslabel);
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} else {
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if (stat(name, &statbuf) < 0) return -1;
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snprintf(label, MNT_LABEL_LEN, "fs_%llx_%llx", statbuf.st_dev, statbuf.st_ino);
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}
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}
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} else {
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/* label to long? */
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if (strlen(type) < MNT_LABEL_LEN) {
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snprintf(label, MNT_LABEL_LEN, "%s", type);
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} else {
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errno = ENOMEM;
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return -1;
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}
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}
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/* Sanity check on user input. */
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if(strchr(args, '\'')) {
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errno = EINVAL;
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return -1;
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}
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/* start the fs-server if not using existing one */
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if (!use_existing) {
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/* See if the given type is even remotely valid. */
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char *testpath;
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testpath = strtok(fspath, ":");
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do {
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if (strlen(testpath) + strlen(type) >= sizeof(path)) {
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errno = E2BIG;
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return(-1);
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}
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strcpy(path, testpath);
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strcat(path, type);
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if (access(path, F_OK) == 0) break;
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} while ((testpath = strtok(NULL, ":")) != NULL);
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if (testpath == NULL) {
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/* We were not able to find type somewhere in "fspath" */
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errno = EINVAL;
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return(-1);
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}
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if (strlen(_PATH_SERVICE) + strlen(path) + strlen(label) +
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strlen(args) + 50 >= sizeof(cmd)) {
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errno = E2BIG;
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return -1;
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}
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sprintf(cmd, _PATH_SERVICE " %sup %s -label '%s' -args '%s %s %s%s'",
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reuse ? "-r ": "", path, label, special, name,
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args[0] ? "-o " : "", args);
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if ((r = system(cmd)) != 0) {
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fprintf(stderr, "mount: couldn't run %s\n", cmd);
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errno = r;
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return -1;
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}
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}
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/* Now perform mount(). */
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memset(&m, 0, sizeof(m));
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m.m_lc_vfs_mount.flags = mountflags;
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m.m_lc_vfs_mount.devlen = special ? strlen(special) + 1 : 0;
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m.m_lc_vfs_mount.pathlen = strlen(name) + 1;
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m.m_lc_vfs_mount.typelen = strlen(type) + 1;
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m.m_lc_vfs_mount.labellen = strlen(label) + 1;
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m.m_lc_vfs_mount.dev = (vir_bytes)special;
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m.m_lc_vfs_mount.path = (vir_bytes)name;
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m.m_lc_vfs_mount.type = (vir_bytes)type;
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m.m_lc_vfs_mount.label = (vir_bytes)label;
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r = _syscall(VFS_PROC_NR, VFS_MOUNT, &m);
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if (r != OK && !use_existing) {
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/* If mount() failed, tell RS to shutdown FS process.
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* No error check - won't do anything with this error anyway.
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*/
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rs_down(label);
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}
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return r;
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}
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int minix_umount(const char *name, int srvflags)
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{
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char label[MNT_LABEL_LEN];
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.m_lc_vfs_umount.name = (vir_bytes)name;
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m.m_lc_vfs_umount.namelen = strlen(name) + 1;
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m.m_lc_vfs_umount.label = (vir_bytes)label;
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m.m_lc_vfs_umount.labellen = sizeof(label);
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r = _syscall(VFS_PROC_NR, VFS_UMOUNT, &m);
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/* don't shut down the driver when exist flag is set */
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if (!(srvflags & MS_EXISTING)) {
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if (r == OK) {
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/* VFS returns the label of the unmounted file system to us. */
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rs_down(label);
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}
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}
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return r;
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}
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char *find_rslabel(char *args_line)
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{
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/**
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* Find and return the rslabel as given as optional
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* agument to the mount command e.g.
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* mount -o rslabel=bla
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* or
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* mount -o rw,rslabel=bla
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* or as found in fstab
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**/
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char *buf, *input,*saveptr;
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buf = input = saveptr = NULL;
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if (args_line == NULL) return NULL;
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/* copy the input args_line we are going to modify it*/
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input = strndup(args_line,20);
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if (input == NULL) /* EOM */
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return NULL; /* it is not that bad to not find a label */
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/* locate rslabel= in the input */
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buf = strstr(input,"rslabel=");
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if (buf == NULL) {
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free(input);
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return NULL;
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}
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/* tokenise on "," starting from rslabel (e.g null terminate )*/
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buf = strtok_r(buf,",",&saveptr);
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/* tokenise the result again using = and take the second entry */
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buf = strtok_r(buf,"=",&saveptr);
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buf = strtok_r(NULL,"=",&saveptr);
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/* buf is now either NULL if there was no second token or
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* the value we are searchig for
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*/
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if (buf != NULL)
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buf = strdup(buf);
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free(input);
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return buf;
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}
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@ -6,227 +6,10 @@
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#include <sys/mount.h>
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#include <sys/mount.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <minix/paths.h>
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#include <minix/rs.h>
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#include <minix/syslib.h>
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#include <unistd.h>
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#define OK 0
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#define FSDEFAULT "mfs"
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int __mount50(const char *type, const char *dir, int flags, void *data,
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size_t len)
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static char fspath[] = "/service/:/usr/pkg/service/"; /* Must include trailing '/' */
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static int rs_down(char *label)
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{
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{
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char cmd[200];
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errno = ENOTSUP;
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if(strlen(_PATH_SERVICE)+strlen(label)+50 >= sizeof(cmd))
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return -1;
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sprintf(cmd, _PATH_SERVICE " down '%s'", label);
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return system(cmd);
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}
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char *find_rslabel(char *args_line);
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int minix_mount(char *special, char *name, int mountflags, int srvflags,
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char *type, char *args)
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{
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int r;
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message m;
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struct stat statbuf;
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char label[MNT_LABEL_LEN];
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char path[PATH_MAX];
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char cmd[200];
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char *p;
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char *rslabel;
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int reuse = 0;
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int use_existing = 0;
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/* Default values. */
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if (type == NULL) type = __UNCONST(FSDEFAULT);
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if (args == NULL) args = __UNCONST("");
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reuse = 0;
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memset(path, '\0', sizeof(path));
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/* Check service flags. */
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if(srvflags & MS_REUSE)
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reuse = 1;
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if(srvflags & MS_EXISTING)
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use_existing = 1;
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/* Make a label for the file system process. This label must be unique and
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* may currently not exceed 16 characters including terminating null. For
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* requests with an associated block device, we use the last path component
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* name of the block special file (truncated to 12 characters, which is
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* hopefully enough). For requests with no associated block device, we use
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* the device number and inode of the mount point, in hexadecimal form.
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*/
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if (!use_existing) {
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if (special) {
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p = strrchr(special, '/');
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p = p ? p + 1 : special;
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if (strchr(p, '\'')) {
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errno = EINVAL;
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return -1;
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}
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snprintf(label, MNT_LABEL_LEN, "fs_%.12s", p);
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} else {
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/* check for a rslabel option in the arguments and try to use
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* that.
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*/
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rslabel = find_rslabel(args);
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if (rslabel != NULL){
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snprintf(label, MNT_LABEL_LEN, "%s", rslabel);
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free(rslabel);
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} else {
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if (stat(name, &statbuf) < 0) return -1;
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snprintf(label, MNT_LABEL_LEN, "fs_%llx_%llx", statbuf.st_dev, statbuf.st_ino);
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}
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}
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} else {
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/* label to long? */
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if (strlen(type) < MNT_LABEL_LEN) {
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snprintf(label, MNT_LABEL_LEN, "%s", type);
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} else {
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errno = ENOMEM;
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return -1;
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}
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}
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/* Sanity check on user input. */
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if(strchr(args, '\'')) {
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errno = EINVAL;
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return -1;
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return -1;
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}
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/* start the fs-server if not using existing one */
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if (!use_existing) {
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/* See if the given type is even remotely valid. */
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char *testpath;
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testpath = strtok(fspath, ":");
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do {
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if (strlen(testpath) + strlen(type) >= sizeof(path)) {
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errno = E2BIG;
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return(-1);
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}
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strcpy(path, testpath);
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strcat(path, type);
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if (access(path, F_OK) == 0) break;
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} while ((testpath = strtok(NULL, ":")) != NULL);
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if (testpath == NULL) {
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/* We were not able to find type somewhere in "fspath" */
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errno = EINVAL;
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return(-1);
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}
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if (strlen(_PATH_SERVICE) + strlen(path) + strlen(label) +
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strlen(args) + 50 >= sizeof(cmd)) {
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errno = E2BIG;
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return -1;
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}
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|
||||||
sprintf(cmd, _PATH_SERVICE " %sup %s -label '%s' -args '%s %s %s%s'",
|
|
||||||
reuse ? "-r ": "", path, label, special, name,
|
|
||||||
args[0] ? "-o " : "", args);
|
|
||||||
|
|
||||||
if ((r = system(cmd)) != 0) {
|
|
||||||
fprintf(stderr, "mount: couldn't run %s\n", cmd);
|
|
||||||
errno = r;
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Now perform mount(). */
|
|
||||||
memset(&m, 0, sizeof(m));
|
|
||||||
m.m_lc_vfs_mount.flags = mountflags;
|
|
||||||
m.m_lc_vfs_mount.devlen = special ? strlen(special) + 1 : 0;
|
|
||||||
m.m_lc_vfs_mount.pathlen = strlen(name) + 1;
|
|
||||||
m.m_lc_vfs_mount.typelen = strlen(type) + 1;
|
|
||||||
m.m_lc_vfs_mount.labellen = strlen(label) + 1;
|
|
||||||
m.m_lc_vfs_mount.dev = (vir_bytes)special;
|
|
||||||
m.m_lc_vfs_mount.path = (vir_bytes)name;
|
|
||||||
m.m_lc_vfs_mount.type = (vir_bytes)type;
|
|
||||||
m.m_lc_vfs_mount.label = (vir_bytes)label;
|
|
||||||
r = _syscall(VFS_PROC_NR, VFS_MOUNT, &m);
|
|
||||||
|
|
||||||
if (r != OK && !use_existing) {
|
|
||||||
/* If mount() failed, tell RS to shutdown FS process.
|
|
||||||
* No error check - won't do anything with this error anyway.
|
|
||||||
*/
|
|
||||||
rs_down(label);
|
|
||||||
}
|
|
||||||
|
|
||||||
return r;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
int minix_umount(const char *name, int srvflags)
|
|
||||||
{
|
|
||||||
char label[MNT_LABEL_LEN];
|
|
||||||
message m;
|
|
||||||
int r;
|
|
||||||
|
|
||||||
memset(&m, 0, sizeof(m));
|
|
||||||
m.m_lc_vfs_umount.name = (vir_bytes)name;
|
|
||||||
m.m_lc_vfs_umount.namelen = strlen(name) + 1;
|
|
||||||
m.m_lc_vfs_umount.label = (vir_bytes)label;
|
|
||||||
m.m_lc_vfs_umount.labellen = sizeof(label);
|
|
||||||
r = _syscall(VFS_PROC_NR, VFS_UMOUNT, &m);
|
|
||||||
|
|
||||||
/* don't shut down the driver when exist flag is set */
|
|
||||||
if (!(srvflags & MS_EXISTING)) {
|
|
||||||
if (r == OK) {
|
|
||||||
/* VFS returns the label of the unmounted file system to us. */
|
|
||||||
rs_down(label);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
return r;
|
|
||||||
}
|
|
||||||
|
|
||||||
char *find_rslabel(char *args_line)
|
|
||||||
{
|
|
||||||
/**
|
|
||||||
* Find and return the rslabel as given as optional
|
|
||||||
* agument to the mount command e.g.
|
|
||||||
* mount -o rslabel=bla
|
|
||||||
* or
|
|
||||||
* mount -o rw,rslabel=bla
|
|
||||||
* or as found in fstab
|
|
||||||
**/
|
|
||||||
char *buf, *input,*saveptr;
|
|
||||||
buf = input = saveptr = NULL;
|
|
||||||
|
|
||||||
if (args_line == NULL) return NULL;
|
|
||||||
|
|
||||||
/* copy the input args_line we are going to modify it*/
|
|
||||||
input = strndup(args_line,20);
|
|
||||||
if (input == NULL) /* EOM */
|
|
||||||
return NULL; /* it is not that bad to not find a label */
|
|
||||||
|
|
||||||
/* locate rslabel= in the input */
|
|
||||||
buf = strstr(input,"rslabel=");
|
|
||||||
if (buf == NULL) {
|
|
||||||
free(input);
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* tokenise on "," starting from rslabel (e.g null terminate )*/
|
|
||||||
buf = strtok_r(buf,",",&saveptr);
|
|
||||||
/* tokenise the result again using = and take the second entry */
|
|
||||||
buf = strtok_r(buf,"=",&saveptr);
|
|
||||||
buf = strtok_r(NULL,"=",&saveptr);
|
|
||||||
/* buf is now either NULL if there was no second token or
|
|
||||||
* the value we are searchig for
|
|
||||||
*/
|
|
||||||
if (buf != NULL)
|
|
||||||
buf = strdup(buf);
|
|
||||||
free(input);
|
|
||||||
return buf;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -507,20 +507,19 @@ int getfh(const char *, void *, size_t *)
|
||||||
__RENAME(__getfh30);
|
__RENAME(__getfh30);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#if !defined(__minix)
|
#if defined(__minix)
|
||||||
int unmount(const char *, int);
|
|
||||||
#else
|
|
||||||
int minix_umount(const char *_name, int srvflags);
|
int minix_umount(const char *_name, int srvflags);
|
||||||
#endif /* !defined(__minix) */
|
#else
|
||||||
|
int unmount(const char *, int);
|
||||||
|
#endif /* defined(__minix) */
|
||||||
|
|
||||||
#if defined(_NETBSD_SOURCE)
|
#if defined(_NETBSD_SOURCE)
|
||||||
#ifndef __LIBC12_SOURCE__
|
#ifndef __LIBC12_SOURCE__
|
||||||
#if !defined(__minix)
|
|
||||||
int mount(const char *, const char *, int, void *, size_t) __RENAME(__mount50);
|
int mount(const char *, const char *, int, void *, size_t) __RENAME(__mount50);
|
||||||
#else
|
#if defined(__minix)
|
||||||
int minix_mount(char *_spec, char *_name, int _mountflags, int srvflags, char *type,
|
int minix_mount(char *_spec, char *_name, int _mountflags, int srvflags, char *type,
|
||||||
char *args);
|
char *args);
|
||||||
#endif /* !defined(__minix) */
|
#endif /* defined(__minix) */
|
||||||
int fhopen(const void *, size_t, int) __RENAME(__fhopen40);
|
int fhopen(const void *, size_t, int) __RENAME(__fhopen40);
|
||||||
int fhstat(const void *, size_t, struct stat *) __RENAME(__fhstat50);
|
int fhstat(const void *, size_t, struct stat *) __RENAME(__fhstat50);
|
||||||
#endif
|
#endif
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue
Block a user