+
+#else /* BB_FEATURE_USE_DEVPS_PATCH */
+
+
+/* The following is the second ps implementation --
+ * this one uses the nifty new devps kernel device.
+ */
+
+#include <linux/devps.h> /* For Erik's nifty devps device driver */
+
+
+extern int ps_main(int argc, char **argv)
+{
+ char device[] = "/dev/ps";
+ int i, j, len, fd;
+ pid_t num_pids;
+ pid_t* pid_array = NULL;
+ struct pid_info info;
+ char uidName[9];
+#ifdef BB_FEATURE_AUTOWIDTH
+ struct winsize win = { 0, 0, 0, 0 };
+ int terminal_width = TERMINAL_WIDTH;
+#else
+#define terminal_width TERMINAL_WIDTH
+#endif
+
+ if (argc > 1 && **(argv + 1) == '-')
+ show_usage();
+
+ /* open device */
+ fd = open(device, O_RDONLY);
+ if (fd < 0)
+ perror_msg_and_die( "open failed for `%s'", device);
+
+ /* Find out how many processes there are */
+ if (ioctl (fd, DEVPS_GET_NUM_PIDS, &num_pids)<0)
+ perror_msg_and_die( "\nDEVPS_GET_PID_LIST");
+
+ /* Allocate some memory -- grab a few extras just in case
+ * some new processes start up while we wait. The kernel will
+ * just ignore any extras if we give it too many, and will trunc.
+ * the list if we give it too few. */
+ pid_array = (pid_t*) xcalloc( num_pids+10, sizeof(pid_t));
+ pid_array[0] = num_pids+10;
+
+ /* Now grab the pid list */
+ if (ioctl (fd, DEVPS_GET_PID_LIST, pid_array)<0)
+ perror_msg_and_die("\nDEVPS_GET_PID_LIST");
+
+#ifdef BB_FEATURE_AUTOWIDTH
+ ioctl(fileno(stdout), TIOCGWINSZ, &win);
+ if (win.ws_col > 0)
+ terminal_width = win.ws_col - 1;
+#endif
+
+ /* Print up a ps listing */
+ printf(" PID Uid Stat Command\n");
+
+ for (i=1; i<pid_array[0] ; i++) {
+ info.pid = pid_array[i];
+
+ if (ioctl (fd, DEVPS_GET_PID_INFO, &info)<0)
+ perror_msg_and_die("\nDEVPS_GET_PID_INFO");
+
+ /* Make some adjustments as needed */
+ my_getpwuid(uidName, info.euid);
+ if (*uidName == '\0')
+ sprintf(uidName, "%ld", info.euid);
+
+ len = printf("%5d %-8s %c ", info.pid, uidName, info.state);
+
+ if (strlen(info.command_line) > 1) {
+ for( j=0; j<(sizeof(info.command_line)-1) && j < (terminal_width-len); j++) {
+ if (*(info.command_line+j) == '\0' && *(info.command_line+j+1) != '\0') {
+ *(info.command_line+j) = ' ';
+ }
+ }
+ *(info.command_line+j) = '\0';
+ puts(info.command_line);
+ } else {
+ printf("[%s]\n", info.name);
+ }
+ }
+
+ /* Free memory */
+ free( pid_array);
+
+ /* close device */
+ if (close (fd) != 0)
+ perror_msg_and_die("close failed for `%s'", device);
+
+ exit (0);
+}
+
+#endif /* BB_FEATURE_USE_DEVPS_PATCH */
+