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de34ec188c
The PID_AUTOMATIC value is now properly recognized by the PidRef logic too. This needed some massaging of header includes, to ensure pidref.h can access process-util.h's definitions and vice versa.
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <sys/types.h>
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typedef enum NamespaceType NamespaceType;
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#include "pidref.h"
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enum NamespaceType {
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NAMESPACE_CGROUP,
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NAMESPACE_IPC,
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NAMESPACE_NET,
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NAMESPACE_MOUNT,
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NAMESPACE_PID,
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NAMESPACE_USER,
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NAMESPACE_UTS,
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NAMESPACE_TIME,
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_NAMESPACE_TYPE_MAX,
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_NAMESPACE_TYPE_INVALID = -EINVAL,
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};
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extern const struct namespace_info {
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const char *proc_name;
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const char *proc_path;
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unsigned int clone_flag;
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} namespace_info[_NAMESPACE_TYPE_MAX + 1];
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int pidref_namespace_open(
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const PidRef *pidref,
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int *ret_pidns_fd,
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int *ret_mntns_fd,
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int *ret_netns_fd,
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int *ret_userns_fd,
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int *ret_root_fd);
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int namespace_open(
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pid_t pid,
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int *ret_pidns_fd,
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int *ret_mntns_fd,
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int *ret_netns_fd,
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int *ret_userns_fd,
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int *ret_root_fd);
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int namespace_enter(int pidns_fd, int mntns_fd, int netns_fd, int userns_fd, int root_fd);
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int fd_is_ns(int fd, unsigned long nsflag);
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int detach_mount_namespace(void);
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int detach_mount_namespace_harder(uid_t target_uid, gid_t target_gid);
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int detach_mount_namespace_userns(int userns_fd);
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static inline bool userns_shift_range_valid(uid_t shift, uid_t range) {
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/* Checks that the specified userns range makes sense, i.e. contains at least one UID, and the end
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* doesn't overflow uid_t. */
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assert_cc((uid_t) -1 > 0); /* verify that uid_t is unsigned */
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if (range <= 0)
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return false;
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if (shift > (uid_t) -1 - range)
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return false;
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return true;
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}
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int userns_acquire_empty(void);
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int userns_acquire(const char *uid_map, const char *gid_map);
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int netns_acquire(void);
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int in_same_namespace(pid_t pid1, pid_t pid2, NamespaceType type);
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int parse_userns_uid_range(const char *s, uid_t *ret_uid_shift, uid_t *ret_uid_range);
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int namespace_open_by_type(NamespaceType type);
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int is_our_namespace(int fd, NamespaceType type);
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