Drop a signal on the process that's associated with the file descriptor. This is a way for a debugger to artificially generate signals as if they came from the system.
#include <sys/procfs.h> #define DCMD_PROC_SIGNAL __DIOT(_DCMD_PROC, __PROC_SUBCMD_PROCFS + 4, procfs_signal)
The arguments to devctl() are:
Argument | Value |
---|---|
filedes | A file descriptor for the process. |
dcmd | DCMD_PROC_SIGNAL |
dev_data_ptr | A pointer to a procfs_signal structure |
n_bytes | sizeof(procfs_signal) |
dev_info_ptr | NULL |
The argument is a pointer to a procfs_signal structure that specifies the signal to send. For example:
procfs_signal signal; signal.tid = 0; signal.signo = SIGCONT; signal.code = 0; signal.value = 0; devctl( fd, DCMD_PROC_SIGNAL, &signal, sizeof signal, NULL);