mirror of
https://github.com/checkpoint-restore/criu
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35 lines
660 B
C
35 lines
660 B
C
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#ifndef FILE_IDS_H__
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#define FILE_IDS_H__
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#include "compiler.h"
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#include "types.h"
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#include "rbtree.h"
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#define FD_ID_INVALID (-1UL)
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#define FD_PID_INVALID ((int)-2UL)
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struct fd_id_entry {
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struct rb_node node;
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struct rb_root subtree_root;
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struct rb_node subtree_node;
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union {
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struct {
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u32 genid; /* generic id, may have duplicates */
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u32 subid; /* subid is always unique */
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} key;
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u64 id;
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} u;
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pid_t pid;
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int fd;
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} __aligned(sizeof(long));
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#define MAKE_FD_GENID(dev, ino, pos) \
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(((u32)(dev) ^ (u32)(ino) ^ (u32)(pos)))
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extern struct fd_id_entry *fd_id_entry_collect(u32 genid, pid_t pid, int fd);
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#endif /* FILE_IDS_H__ */
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