Stop the process that's associated with the file descriptor.
#include <sys/procfs.h> #define DCMD_PROC_STOP32 (__DIOF(_DCMD_PROC, __PROC_SUBCMD_PROCFS + 5, procfs_status32)) #define DCMD_PROC_STOP64 (__DIOF(_DCMD_PROC, __PROC_SUBCMD_PROCFS + 5, procfs_status64)) #define DCMD_PROC_STOP (__DIOF(_DCMD_PROC, __PROC_SUBCMD_PROCFS + 5, procfs_status))
The arguments to devctl() are:
Argument | Value |
---|---|
filedes | A file descriptor for the process. You must have opened the file descriptor for writing. |
dcmd | DCMD_PROC_STOP |
dev_data_ptr | A pointer to a procfs_status structure |
n_bytes | sizeof(procfs_status) |
dev_info_ptr | NULL |
The argument to this command is the address of a procfs_status structure (see debug_thread_t in <sys/debug.h>). This structure is filled with status information on return. For example:
procfs_status my_status; devctl( fd, DCMD_PROC_STOP, &my_status, sizeof(my_status), NULL);
For more information about the contents of this structure, see Thread information, earlier in this chapter.
To resume the process, use DCMD_PROC_RUN.