Function report |
Source Code:fs\fsopen.c |
Create Date:2022-07-28 20:13:28 |
Last Modify:2022-05-24 07:35:12 | Copyright©Brick |
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Name:Check the state and apply the configuration. Note that this function is* allowed to 'steal' the value by setting param->xxx to NULL before returning.
Proto:static int vfs_fsconfig_locked(struct fs_context *fc, int cmd, struct fs_parameter *param)
Type:int
Parameter:
Type | Parameter | Name |
---|---|---|
struct fs_context * | fc | |
int | cmd | |
struct fs_parameter * | param |
222 | ret = finish_clean_context(fc) |
226 | Case cmd == FSCONFIG_CMD_CREATE |
227 | If phase != FS_CONTEXT_CREATE_PARAMS Then Return -EBUSY |
229 | If Not mount_capable(fc) Then Return -EPERM |
231 | phase = FS_CONTEXT_CREATING |
233 | If ret Then Break |
236 | ret = security_sb_kern_mount(sb) |
238 | fc_drop_locked(fc) |
239 | Break |
243 | Return 0 |
244 | Case cmd == FSCONFIG_CMD_RECONFIGURE |
245 | If phase != FS_CONTEXT_RECONF_PARAMS Then Return -EBUSY |
249 | If Not ns_capable(s_user_ns, Allow setting zone reclaim policy ) Then |
253 | lock for writing |
254 | ret = gure_super - asks filesystem to change superblock parameters*@fc: The superblock and configuration* Alters the configuration parameters of a live superblock. |
256 | If ret Then Break |
259 | Return 0 |
260 | Default |
261 | If phase != FS_CONTEXT_CREATE_PARAMS && phase != FS_CONTEXT_RECONF_PARAMS Then Return -EBUSY |
267 | phase = FS_CONTEXT_FAILED |
268 | Return ret |
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