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c92c9e234e
The unique id is 32 bit and consists only of the subid value. This is _really_ enough. The genid part is just a hint for the tree-search algirythm to avoid unneeded sys_kcmp calls. Plus, generate IDs for special files. This will make it easier to move the regfiles into into separate files (see the respective patch for details). Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
18 lines
393 B
C
18 lines
393 B
C
#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 (-1U)
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#define FD_PID_INVALID (-2U)
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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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struct fdinfo_entry;
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extern int fd_id_generate(pid_t pid, struct fdinfo_entry *fe);
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extern void fd_id_show_tree(void);
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#endif /* FILE_IDS_H__ */
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