Function report |
Source Code:block\ioprio.c |
Create Date:2022-07-28 17:23:53 |
Last Modify:2020-03-17 23:21:05 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:SYSCALL_DEFINE2
Proto:SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
Type:
Parameter:Nothing
197 | Case which == IOPRIO_WHO_PROCESS |
198 | If Not who Then p = current process |
200 | Else p = find_task_by_vpid(who) |
202 | If p Then ret = get_task_ioprio(p) |
204 | Break |
205 | Case which == IOPRIO_WHO_PGRP |
210 | Do |
210 | typeof(({typeof(( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first))))________p1 = ({union{typeof(( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first))))__val;char __c[1];}__u;if (1)__read_once_size( & (( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first)))), __u.__c, sizeof(( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first)))));Else __read_once_size_nocheck( & (( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first)))), __u.__c, sizeof(( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first)))));Do{}while (0);__u.__val;});((typeof( * ( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first)))) * )(________p1));}))____ptr = (({ |
210 | typeof(( * ((struct hlist_node * * )( & ( & (pgrp)-> lists of tasks that use this pid [PIDTYPE_PGID])->first))))________p1 = ({ |
210 | union{typeof(( * ((structhlist_node * * )( & first)))) __val;char __c[1];}__u |
210 | If 1 Then __read_once_size( & (( * ((structhlist_node * * )( & first)))), __c, size of *first ) |
210 | Else __read_once_size_nocheck( & (( * ((structhlist_node * * )( & first)))), __c, size of *first ) |
210 | Do |
210 | When 0 cycle |
210 | __val |
210 | }) |
210 | })) |
210 | ____ptr ? ({ |
210 | }) : NULL |
210 | typeof(({typeof(( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next))))________p1 = ({union{typeof(( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next))))__val;char __c[1];}__u;if (1)__read_once_size( & (( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next)))), __u.__c, sizeof(( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next)))));Else __read_once_size_nocheck( & (( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next)))), __u.__c, sizeof(( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next)))));Do{}while (0);__u.__val;});((typeof( * ( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next)))) * )(________p1));}))____ptr = (({ |
210 | typeof(( * ((struct hlist_node * * )( & ( & ((p))->pid_links[PIDTYPE_PGID])->next))))________p1 = ({ |
210 | union{typeof(( * ((structhlist_node * * )( & next)))) __val;char __c[1];}__u |
210 | If 1 Then __read_once_size( & (( * ((structhlist_node * * )( & next)))), __c, size of *next ) |
210 | Else __read_once_size_nocheck( & (( * ((structhlist_node * * )( & next)))), __c, size of *next ) |
210 | Do |
210 | When 0 cycle |
210 | __val |
210 | }) |
210 | })) |
210 | ____ptr ? ({ |
210 | }) : NULL |
210 | })) |
210 | void * __mptr = (void * )(({ |
210 | If 1 Then __read_once_size( & (next), __c, size of next ) |
210 | Else __read_once_size_nocheck( & (next), __c, size of next ) |
210 | Do |
210 | When 0 cycle |
210 | __val |
210 | })) |
210 | Do |
210 | When 0 cycle |
210 | __mptr - __builtin_offsetof(typeof( * p), thread_node) |
210 | cycle (({}), p = ({}); & p->thread_node != ( & ((tg___)->signal)->thread_head);p = ({ |
210 | void * __mptr = (void * )(({ |
210 | If 1 Then __read_once_size( & (next), __c, size of next ) |
210 | Else __read_once_size_nocheck( & (next), __c, size of next ) |
210 | Do |
210 | When 0 cycle |
210 | __val |
210 | })) |
210 | Do |
210 | When 0 cycle |
210 | __mptr - __builtin_offsetof(typeof( * p), thread_node) |
210 | })) |
218 | If PIDTYPE_PGID == PIDTYPE_PID Then Break |
218 | When 0 cycle |
219 | Break |
220 | Case which == IOPRIO_WHO_USER |
222 | If Not who Then user = current_user() |
224 | Else user = Locate the user_struct for the passed UID. If found, take a ref on it. The* caller must undo that ref with free_uid().* If the user_struct could not be found, return NULL. |
227 | If Not user Then Break |
234 | tmpio = get_task_ioprio(p) |
235 | If tmpio < 0 Then Continue |
239 | Else ret = ioprio_best(ret, tmpio) |
245 | Break |
246 | Default |
251 | Return ret |
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