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/*
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
#if (NXT_HAVE_FREEBSD_NMOUNT)
#include <sys/param.h>
#include <sys/uio.h>
#endif
#if (NXT_HAVE_LINUX_MOUNT)
nxt_int_t
nxt_fs_mount(nxt_task_t *task, nxt_fs_mount_t *mnt)
{
int rc;
const char *fsname;
unsigned long flags;
flags = 0;
switch (mnt->type) {
case NXT_FS_BIND:
if (nxt_slow_path(mnt->flags != 0)) {
nxt_log(task, NXT_LOG_WARN,
"bind mount ignores additional flags");
}
fsname = "bind";
flags = MS_BIND | MS_REC;
break;
case NXT_FS_PROC:
fsname = "proc";
goto getflags;
case NXT_FS_TMP:
fsname = "tmpfs";
goto getflags;
default:
fsname = (const char *) mnt->name;
getflags:
if (mnt->flags & NXT_FS_FLAGS_NODEV) {
flags |= MS_NODEV;
}
if (mnt->flags & NXT_FS_FLAGS_NOEXEC) {
flags |= MS_NOEXEC;
}
if (mnt->flags & NXT_FS_FLAGS_NOSUID) {
flags |= MS_NOSUID;
}
if (!(mnt->flags & NXT_FS_FLAGS_NOTIME)) {
flags |= MS_RELATIME;
}
}
rc = mount((const char *) mnt->src, (const char *) mnt->dst, fsname, flags,
mnt->data);
if (nxt_slow_path(rc < 0)) {
nxt_alert(task, "mount(\"%s\", \"%s\", \"%s\", %ul, \"%s\") %E",
mnt->src, mnt->dst, fsname, flags, mnt->data, nxt_errno);
return NXT_ERROR;
}
return NXT_OK;
}
#elif (NXT_HAVE_FREEBSD_NMOUNT)
nxt_int_t
nxt_fs_mount(nxt_task_t *task, nxt_fs_mount_t *mnt)
{
int flags;
u_char *data, *p, *end;
size_t iovlen;
nxt_int_t ret;
const char *fsname;
struct iovec iov[128];
char errmsg[256];
if (nxt_slow_path((mnt->flags & NXT_FS_FLAGS_NODEV) && !mnt->builtin)) {
nxt_alert(task, "nmount(2) doesn't support \"nodev\" option");
return NXT_ERROR;
}
flags = 0;
switch (mnt->type) {
case NXT_FS_BIND:
fsname = "nullfs";
break;
case NXT_FS_PROC:
fsname = "procfs";
goto getflags;
case NXT_FS_TMP:
fsname = "tmpfs";
goto getflags;
default:
fsname = (const char *) mnt->name;
getflags:
if (mnt->flags & NXT_FS_FLAGS_NOEXEC) {
flags |= MNT_NOEXEC;
}
if (mnt->flags & NXT_FS_FLAGS_NOSUID) {
flags |= MNT_NOSUID;
}
if (mnt->flags & NXT_FS_FLAGS_NOTIME) {
flags |= MNT_NOATIME;
}
if (mnt->flags & NXT_FS_FLAGS_RDONLY) {
flags |= MNT_RDONLY;
}
}
iov[0].iov_base = (void *) "fstype";
iov[0].iov_len = 7;
iov[1].iov_base = (void *) fsname;
iov[1].iov_len = nxt_strlen(fsname) + 1;
iov[2].iov_base = (void *) "fspath";
iov[2].iov_len = 7;
iov[3].iov_base = (void *) mnt->dst;
iov[3].iov_len = nxt_strlen(mnt->dst) + 1;
iov[4].iov_base = (void *) "target";
iov[4].iov_len = 7;
iov[5].iov_base = (void *) mnt->src;
iov[5].iov_len = nxt_strlen(mnt->src) + 1;
iov[6].iov_base = (void *) "errmsg";
iov[6].iov_len = 7;
iov[7].iov_base = (void *) errmsg;
iov[7].iov_len = sizeof(errmsg);
iovlen = 8;
data = NULL;
if (mnt->data != NULL) {
data = (u_char *) nxt_strdup(mnt->data);
if (nxt_slow_path(data == NULL)) {
return NXT_ERROR;
}
end = data - 1;
do {
p = end + 1;
end = nxt_strchr(p, '=');
if (end == NULL) {
break;
}
*end = '\0';
iov[iovlen].iov_base = (void *) p;
iov[iovlen].iov_len = (end - p) + 1;
iovlen++;
p = end + 1;
end = nxt_strchr(p, ',');
if (end != NULL) {
*end = '\0';
}
iov[iovlen].iov_base = (void *) p;
iov[iovlen].iov_len = nxt_strlen(p) + 1;
iovlen++;
} while (end != NULL && nxt_nitems(iov) > (iovlen + 2));
}
ret = NXT_OK;
if (nxt_slow_path(nmount(iov, iovlen, flags) < 0)) {
nxt_alert(task, "nmount(%p, %d, 0) %s", iov, iovlen, errmsg);
ret = NXT_ERROR;
}
if (data != NULL) {
free(data);
}
return ret;
}
#endif
#if (NXT_HAVE_LINUX_UMOUNT2)
void
nxt_fs_unmount(const u_char *path)
{
if (nxt_slow_path(umount2((const char *) path, MNT_DETACH) < 0)) {
nxt_thread_log_error(NXT_LOG_WARN, "umount2(%s, MNT_DETACH) %E",
path, nxt_errno);
}
}
#elif (NXT_HAVE_UNMOUNT)
void
nxt_fs_unmount(const u_char *path)
{
if (nxt_slow_path(unmount((const char *) path, MNT_FORCE) < 0)) {
nxt_thread_log_error(NXT_LOG_WARN, "unmount(%s) %E", path, nxt_errno);
}
}
#endif
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