mirror of
https://github.com/checkpoint-restore/criu
synced 2025-08-28 21:07:43 +00:00
cf2e6c54c9
This patch add ability to test /proc/cpuinfo data we're interested in at the moment. The code provides the following functionality - cpu_init, to parse cpuinfo and check if the host cpu we're running on is suitable enough for FPU checkpoint/restore. If FPU present then there must be at least fxsave capability present - cpu_set_feature/cpu_has_feature helpers which provides to test certain bits and set them where needed (we need to set bits when parse cpuinfo) Note, we reserve space for all cpuinfo bits known by the kernel at moment, while use only three FPU related bits for a while. This is done because we might need to use or find out other features in future. After all it's just 40 bytes of memory needed to keep all possible bits. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
144 lines
3.1 KiB
C
144 lines
3.1 KiB
C
#ifndef PROC_PARSE_H__
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#define PROC_PARSE_H__
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#include <sys/types.h>
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#include "types.h"
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#include "image.h"
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#include "list.h"
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#include "../protobuf/eventfd.pb-c.h"
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#include "../protobuf/eventpoll.pb-c.h"
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#include "../protobuf/signalfd.pb-c.h"
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#include "../protobuf/inotify.pb-c.h"
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#define PROC_TASK_COMM_LEN 32
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#define PROC_TASK_COMM_LEN_FMT "(%31s"
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struct proc_pid_stat_small {
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int pid;
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char comm[PROC_TASK_COMM_LEN];
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char state;
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int ppid;
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int pgid;
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int sid;
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};
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struct proc_pid_stat {
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int pid;
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char comm[PROC_TASK_COMM_LEN];
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char state;
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int ppid;
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int pgid;
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int sid;
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int tty_nr;
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int tty_pgrp;
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unsigned int flags;
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unsigned long min_flt;
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unsigned long cmin_flt;
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unsigned long maj_flt;
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unsigned long cmaj_flt;
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unsigned long utime;
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unsigned long stime;
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long cutime;
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long cstime;
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long priority;
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long nice;
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int num_threads;
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int zero0;
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unsigned long long start_time;
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unsigned long vsize;
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long mm_rss;
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unsigned long rsslim;
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unsigned long start_code;
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unsigned long end_code;
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unsigned long start_stack;
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unsigned long esp;
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unsigned long eip;
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unsigned long sig_pending;
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unsigned long sig_blocked;
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unsigned long sig_ignored;
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unsigned long sig_handled;
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unsigned long wchan;
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unsigned long zero1;
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unsigned long zero2;
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int exit_signal;
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int task_cpu;
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unsigned int rt_priority;
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unsigned int policy;
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unsigned long long delayacct_blkio_ticks;
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unsigned long gtime;
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long cgtime;
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unsigned long start_data;
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unsigned long end_data;
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unsigned long start_brk;
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unsigned long arg_start;
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unsigned long arg_end;
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unsigned long env_start;
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unsigned long env_end;
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int exit_code;
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};
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#define PROC_CAP_SIZE 2
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struct proc_status_creds {
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unsigned int uids[4];
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unsigned int gids[4];
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uint32_t cap_inh[PROC_CAP_SIZE];
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uint32_t cap_prm[PROC_CAP_SIZE];
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uint32_t cap_eff[PROC_CAP_SIZE];
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uint32_t cap_bnd[PROC_CAP_SIZE];
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};
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struct mount_info;
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struct fstype {
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char *name;
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int (*dump)(struct mount_info *pm);
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int (*restore)(struct mount_info *pm);
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};
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struct mount_info {
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int mnt_id;
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int parent_mnt_id;
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unsigned int s_dev;
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char *root;
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char *mountpoint;
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unsigned flags;
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int master_id;
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int shared_id;
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struct fstype *fstype;
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char *source;
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char *options;
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struct mount_info *next;
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/* tree linkage */
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struct mount_info *parent;
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struct list_head children;
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struct list_head siblings;
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};
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static inline void mnt_entry_init(struct mount_info *pm)
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{
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pm->parent = NULL;
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INIT_LIST_HEAD(&pm->children);
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}
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extern struct mount_info *parse_mountinfo(pid_t pid);
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extern int parse_pid_stat(pid_t pid, struct proc_pid_stat *s);
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extern int parse_pid_stat_small(pid_t pid, struct proc_pid_stat_small *s);
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extern int parse_smaps(pid_t pid, struct list_head *vma_area_list, bool use_map_files);
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extern int parse_pid_status(pid_t pid, struct proc_status_creds *);
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union fdinfo_entries {
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EventfdFileEntry efd;
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EventpollTfdEntry epl;
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SignalfdEntry sfd;
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InotifyWdEntry ify;
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};
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extern int parse_fdinfo(int fd, int type,
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int (*cb)(union fdinfo_entries *e, void *arg), void *arg);
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extern int parse_cpuinfo_features(void);
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#endif /* PROC_PARSE_H__ */
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