mir/criu
2
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu synced 2025-08-31 14:25:49 +00:00
Code Issues Releases Wiki Activity

fs: Move info about cwd into separate file

Browse Source 
Why? Because one day we'll support various CLONE_ flags and
for fdtable and fs info we'd like to have separate images (since
these objects are separate in kernel).

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov
2012-04-09 13:41:05 +04:00
parent 69b3ebd002
commit e5e57e832b
8 changed files with 103 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
files.c
View File

@@ -259,23 +259,6 @@ static int find_open_fe_fd(struct fdinfo_entry *fe)
return open_fe_fd(&rfi->d);
}
static int restore_cwd(struct fdinfo_entry *fe, int fd)
{
int cfd;
cfd = find_open_fe_fd(fe);
if (cfd < 0)
return cfd;
if (fchdir(cfd)) {
pr_perror("Can't chdir");
return -1;
}
close(cfd);
return 0;
}
int self_exe_fd;
static int restore_exe_early(struct fdinfo_entry *fe, int fd)
@@ -493,8 +476,6 @@ static int open_special_fdinfo(int pid, struct fdinfo_entry *fe,
if (state != FD_STATE_RECV)
return 0;
if (fe->type == FDINFO_CWD)
return restore_cwd(fe, fdinfo_fd);
if (fe->type == FDINFO_EXE)
return restore_exe_early(fe, fdinfo_fd);
@@ -550,6 +531,41 @@ int prepare_fds(int pid)
return run_unix_connections();
}
int prepare_fs(int pid)
{
int ifd, cwd;
struct fs_entry fe;
struct file_desc *fd;
ifd = open_image_ro(CR_FD_FS, pid);
if (ifd < 0)
return -1;
if (read_img(ifd, &fe) < 0)
return -1;
fd = find_file_desc_raw(FDINFO_REG, fe.cwd_id);
if (fd == NULL) {
pr_err("Can't find file for %d's cwd (%x)\n",
pid, fe.cwd_id);
return -1;
}
cwd = open_fe_fd(fd);
if (cwd < 0)
return -1;
if (fchdir(cwd) < 0) {
pr_perror("Can't change root");
return -1;
}
close(cwd);
close(ifd);
return 0;
}
int get_filemap_fd(int pid, struct vma_entry *vma_entry)
{
struct file_desc *fd;