函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\namespace.c Create Date:2022-07-29 10:39:33
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Is the caller allowed to modify his namespace?

函数原型：static inline bool may_mount(void)

返回类型：bool

参数：无

1643  返回:ns_capable(user_ns, Allow setting zone reclaim policy )
调用者
名称描述
ksys_umountNow umount can handle mount points as well as block devices.* This is important for filesystems which use unnamed block devices.* We now support a flag for forced unmount like the other 'big iron'* unixes
SYSCALL_DEFINE3
do_mountFlags is a 32-bit value that allows up to 31 non-fs dependent flags to* be given to the mount() call (ie: read-only, no-dev, no-suid etc)
SYSCALL_DEFINE3Create a kernel mount representation for a new, prepared superblock* (specified by fs_fd) and attach to an open_tree-like file descriptor.
SYSCALL_DEFINE5Move a mount from one place to another. In combination with* fsopen()/fsmount() this is used to install a new mount and in combination* with open_tree(OPEN_TREE_CLONE [| AT_RECURSIVE]) it can be used to copy* a mount subtree.
SYSCALL_DEFINE2pivot_root Semantics:* Moves the root file system of the current process to the directory put_old,* makes new_root as the new root file system of the current process, and sets* root/cwd of all processes which had them on the current root to new_root