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parasite: Macro for getting parasite symbols

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Same as previous patch -- easier to read and possible
to use tags.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Pavel Emelyanov 2012-11-13 20:51:32 +03:00
parent f86bbe6a9c
commit e6617b5e2e
2 changed files with 5 additions and 13 deletions
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12
include/parasite.h
View File

@ -123,16 +123,8 @@ struct parasite_tty_args {
int st_excl;
};
/*
* Some useful offsets
*/
#define PARASITE_ARGS_ADDR(start) \
((start) + parasite_blob_offset____export_parasite_args)
#define PARASITE_CMD_ADDR(start) \
((start) + parasite_blob_offset____export_parasite_cmd)
#define PARASITE_HEAD_ADDR(start) \
((start) + parasite_blob_offset____export_parasite_head_start)
/* the parasite prefix is added by gen_offsets.sh */
#define parasite_sym(pblob, name) ((void *)(pblob) + parasite_blob_offset__##name)
#endif /* !__ASSEMBLY__ */
#endif /* CR_PARASITE_H_ */

6
parasite-syscall.c
View File

@ -850,9 +850,9 @@ struct parasite_ctl *parasite_infect_seized(pid_t pid, struct pstree_item *item,
memcpy(ctl->local_map, parasite_blob, sizeof(parasite_blob));
/* Setup the rest of a control block */
ctl->parasite_ip = PARASITE_HEAD_ADDR((unsigned long)ctl->remote_map);
ctl->addr_cmd = (unsigned int *)PARASITE_CMD_ADDR((unsigned long)ctl->local_map);
ctl->addr_args = (void *)PARASITE_ARGS_ADDR((unsigned long)ctl->local_map);
ctl->parasite_ip = (unsigned long)parasite_sym(ctl->remote_map, __export_parasite_head_start);
ctl->addr_cmd = parasite_sym(ctl->local_map, __export_parasite_cmd);
ctl->addr_args = parasite_sym(ctl->local_map, __export_parasite_args);
ret = parasite_init(ctl, pid, item->nr_threads);
if (ret) {