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Code Issues Releases Wiki Activity

dump: Do not forget to close drained fds

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A bugfix. Drained fds should be closed after we are done with them.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov 2012-03-29 16:40:50 +04:00
parent bac56b11c0
commit f4968e2d05
1 changed files with 11 additions and 14 deletions
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25
cr-dump.c
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@ -159,8 +159,7 @@ static int dump_one_reg_file(int lfd, u32 id, const struct fd_parms *p)
}
static int dump_one_fdinfo(const struct fd_parms *p, int lfd,
const struct cr_fdset *cr_fdset,
bool do_close_lfd)
const struct cr_fdset *cr_fdset)
{
struct fdinfo_entry e;
int ret = -1;
@ -176,9 +175,6 @@ static int dump_one_fdinfo(const struct fd_parms *p, int lfd,
if (ret < 0)
goto err;
if (do_close_lfd)
close(lfd);
pr_info("fdinfo: type: %2x flags: %4x pos: %8lx addr: %16lx\n",
p->type, p->flags, p->pos, p->fd_name);
@ -205,7 +201,8 @@ static int dump_task_special_files(pid_t pid, const struct cr_fdset *cr_fdset)
fd = open_proc(pid, "cwd");
if (fd < 0)
return -1;
ret = dump_one_fdinfo(&params, fd, cr_fdset, 1);
ret = dump_one_fdinfo(&params, fd, cr_fdset);
close(fd);
if (ret)
return ret;
@ -219,7 +216,8 @@ static int dump_task_special_files(pid_t pid, const struct cr_fdset *cr_fdset)
fd = open_proc(pid, "exe");
if (fd < 0)
return -1;
ret = dump_one_fdinfo(&params, fd, cr_fdset, 1);
ret = dump_one_fdinfo(&params, fd, cr_fdset);
close(fd);
return ret;
}
@ -347,7 +345,7 @@ static int dump_one_fd(pid_t pid, int fd, int lfd,
if (fill_fd_params(pid, fd, lfd, &p) < 0) {
pr_perror("Can't get stat on %d", fd);
goto out_close;
return -1;
}
if (S_ISSOCK(p.stat.st_mode))
@ -360,7 +358,7 @@ static int dump_one_fd(pid_t pid, int fd, int lfd,
if (p.fd_name < 3) {
err = 0;
pr_info("... Skipping tty ... %d\n", fd);
goto out_close;
goto out;
}
goto err;
}
@ -372,7 +370,7 @@ static int dump_one_fd(pid_t pid, int fd, int lfd,
p.id = MAKE_FD_GENID(p.stat.st_dev, p.stat.st_ino, p.pos);
p.type = FDINFO_REG;
return dump_one_fdinfo(&p, lfd, cr_fdset, 1);
return dump_one_fdinfo(&p, lfd, cr_fdset);
}
if (S_ISFIFO(p.stat.st_mode))
@ -380,9 +378,7 @@ static int dump_one_fd(pid_t pid, int fd, int lfd,
err:
pr_err("Can't dump file %d of that type [%x]\n", fd, p.stat.st_mode);
out_close:
close_safe(&lfd);
out:
return err;
}
@ -418,6 +414,7 @@ static int dump_task_files_seized(struct parasite_ctl *ctl, const struct cr_fdse
for (i = 0; i < nr_fds; i++) {
ret = dump_one_fd(ctl->pid, fds[i], lfds[i],
cr_fdset, sk_queue);
close(lfds[i]);
if (ret)
goto err;
}
@ -500,7 +497,7 @@ static int dump_filemap(pid_t pid, struct vma_entry *vma, int file_fd,
* XXX Strictly speaking, no need in full fdinfo here.
* This can be relaxed down to calling dump_one_reg_file.
*/
return dump_one_fdinfo(&p, file_fd, fdset, 0);
return dump_one_fdinfo(&p, file_fd, fdset);
}
static int dump_task_mappings(pid_t pid, const struct list_head *vma_area_list,