/**************************************************************************** * apps/nshlib/nsh_proccmds.c * * Copyright (C) 2007-2009, 2011-2012, 2014-2015 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include #include #include #include #include #include #include #include "nsh.h" #include "nsh_console.h" /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ #ifndef CONFIG_NSH_PROC_MOUNTPOINT # define CONFIG_NSH_PROC_MOUNTPOINT "/proc" #endif /* See include/nuttx/sched.h: */ #undef HAVE_GROUPID #if defined(CONFIG_SCHED_HAVE_PARENT) && defined(CONFIG_SCHED_CHILD_STATUS) # define HAVE_GROUPID 1 #endif #ifdef CONFIG_DISABLE_PTHREAD # undef HAVE_GROUPID #endif /**************************************************************************** * Private Types ****************************************************************************/ /* The returned value should be zero for success or TRUE or non zero for * failure or FALSE. */ typedef int (*exec_t)(void); /* This structure represents the parsed task characteristics */ struct nsh_taskstatus_s { FAR const char *td_type; /* Thread type */ #ifdef CONFIG_SCHED_HAVE_PARENT #ifdef HAVE_GROUPID FAR const char *td_groupid; /* Group ID */ #else FAR const char *td_ppid; /* Parent thread ID */ #endif #endif #ifdef CONFIG_SMP FAR const char *td_cpu; /* CPU */ #endif FAR const char *td_state; /* Thread state */ FAR const char *td_event; /* Thread wait event */ FAR const char *td_flags; /* Thread flags */ FAR const char *td_priority; /* Thread priority */ FAR const char *td_policy; /* Thread scheduler */ #ifndef CONFIG_DISABLE_SIGNALS FAR const char *td_sigmask; /* Signal mask */ #endif }; /* Status strings */ #if 0 /* Not used */ static const char g_name[] = "Name:"; #endif static const char g_type[] = "Type:"; #ifdef CONFIG_SCHED_HAVE_PARENT #ifdef HAVE_GROUPID static const char g_groupid[] = "Group:"; #else static const char g_ppid[] = "PPID:"; #endif #endif #ifdef CONFIG_SMP static const char g_cpu[] = "CPU:"; #endif static const char g_state[] = "State:"; static const char g_flags[] = "Flags:"; static const char g_priority[] = "Priority:"; static const char g_scheduler[] = "Scheduler:"; #ifndef CONFIG_DISABLE_SIGNALS static const char g_sigmask[] = "SigMask:"; #endif #if !defined(CONFIG_NSH_DISABLE_PSSTACKUSAGE) static const char g_stacksize[] = "StackSize:"; static const char g_stackused[] = "StackUsed:"; #endif /**************************************************************************** * Private Functions ****************************************************************************/ /**************************************************************************** * Name: nsh_parse_statusline ****************************************************************************/ #ifndef CONFIG_NSH_DISABLE_PS static void nsh_parse_statusline(FAR char *line, FAR struct nsh_taskstatus_s *status) { /* Parse the task status. * * Format: * * 111111111122222222223 * 123456789012345678901234567890 * Name: xxxx... Task/thread name (See CONFIG_TASK_NAME_SIZE) * Type: xxxxxxx {Task, pthread, Kthread, Invalid} * Type: xxxxxxx {Task, pthread, Kthread, Invalid} * PPID: xxxxx Parent thread ID * State: xxxxxxxx,xxxxxxxxx {Invalid, Waiting, Ready, Running, Inactive}, * {Unlock, Semaphore, Signal, MQ empty, MQ full} * Flags: xxx N,P,X * Priority: nnn Decimal, 0-255 * Scheduler: xxxxxxxxxxxxxx {SCHED_FIFO, SCHED_RR, SCHED_SPORADIC, SCHED_OTHER} * Sigmask: nnnnnnnn Hexadecimal, 32-bit */ #if 0 /* Not used */ /* Task name */ if (strncmp(line, g_name, strlen(g_name)) == 0) { /* Not used */ } else #endif /* Task/thread type */ if (strncmp(line, g_type, strlen(g_type)) == 0) { /* Save the thread type */ status->td_type = nsh_trimspaces(&line[12]); } #ifdef CONFIG_SCHED_HAVE_PARENT #ifdef HAVE_GROUPID else if (strncmp(line, g_groupid, strlen(g_groupid)) == 0) { /* Save the Group ID */ status->td_groupid = nsh_trimspaces(&line[12]); } #else else if (strncmp(line, g_ppid, strlen(g_ppid)) == 0) { /* Save the parent thread id */ status->td_ppid = nsh_trimspaces(&line[12]); } #endif #endif #ifdef CONFIG_SMP else if (strncmp(line, g_cpu, strlen(g_cpu)) == 0) { /* Save the current CPU */ status->td_cpu = nsh_trimspaces(&line[12]); } #endif else if (strncmp(line, g_state, strlen(g_state)) == 0) { FAR char *ptr; /* Save the thread state */ status->td_state = nsh_trimspaces(&line[12]); /* Check if an event follows the state */ ptr = strchr(status->td_state, ','); if (ptr != NULL) { *ptr++ = '\0'; status->td_event = nsh_trimspaces(ptr); } } else if (strncmp(line, g_flags, strlen(g_flags)) == 0) { status->td_flags = nsh_trimspaces(&line[12]); } else if (strncmp(line, g_priority, strlen(g_priority)) == 0) { status->td_priority = nsh_trimspaces(&line[12]); } else if (strncmp(line, g_scheduler, strlen(g_scheduler)) == 0) { /* Skip over the SCHED_ part of the policy. Resultis max 8 bytes */ status->td_policy = nsh_trimspaces(&line[12+6]); } #ifndef CONFIG_DISABLE_SIGNALS else if (strncmp(line, g_sigmask, strlen(g_sigmask)) == 0) { status->td_sigmask = nsh_trimspaces(&line[12]); } #endif } #endif /**************************************************************************** * Name: ps_callback ****************************************************************************/ #ifndef CONFIG_NSH_DISABLE_PS static int ps_callback(FAR struct nsh_vtbl_s *vtbl, FAR const char *dirpath, FAR struct dirent *entryp, FAR void *pvarg) { struct nsh_taskstatus_s status; FAR char *filepath; FAR char *line; FAR char *nextline; int ret; int i; #if !defined(CONFIG_NSH_DISABLE_PSSTACKUSAGE) int stack_size; int stack_used; float stack_filled; #endif /* Task/thread entries in the /proc directory will all be (1) directories * with (2) all numeric names. */ if (!DIRENT_ISDIRECTORY(entryp->d_type)) { /* Not a directory... skip this entry */ return OK; } /* Check each character in the name */ for (i = 0; i < NAME_MAX && entryp->d_name[i] != '\0'; i++) { if (!isdigit(entryp->d_name[i])) { /* Name contains something other than a numeric character */ return OK; } } /* Set all pointers to the empty string. */ status.td_type = ""; #ifdef CONFIG_SCHED_HAVE_PARENT #ifdef HAVE_GROUPID status.td_groupid = ""; #else status.td_ppid = ""; #endif #endif #ifdef CONFIG_SMP status.td_cpu = ""; #endif status.td_state = ""; status.td_event = ""; status.td_flags = ""; status.td_priority = ""; status.td_policy = ""; #ifndef CONFIG_DISABLE_SIGNALS status.td_sigmask = ""; #endif /* Read the task status */ filepath = NULL; ret = asprintf(&filepath, "%s/%s/status", dirpath, entryp->d_name); if (ret < 0 || filepath == NULL) { nsh_output(vtbl, g_fmtcmdfailed, "ps", "asprintf", NSH_ERRNO); } else { ret = nsh_readfile(vtbl, "ps", filepath, vtbl->iobuffer, IOBUFFERSIZE); free(filepath); if (ret >= 0) { /* Parse the task status. */ nextline = vtbl->iobuffer; do { /* Find the beginning of the next line and NUL-terminat the * current line. */ line = nextline; for (nextline++; *nextline != '\n' && *nextline != '\0'; nextline++); if (*nextline == '\n') { *nextline++ = '\0'; } else { nextline = NULL; } /* Parse the current line */ nsh_parse_statusline(line, &status); } while (nextline != NULL); } } /* Finally, print the status information */ nsh_output(vtbl, "%5s ", entryp->d_name); #ifdef CONFIG_SCHED_HAVE_PARENT #ifdef HAVE_GROUPID nsh_output(vtbl, "%5s ", status.td_groupid); #else nsh_output(vtbl, "%5s ", status.td_ppid); #endif #endif #ifdef CONFIG_SMP nsh_output(vtbl, "%3s ", status.td_cpu); #endif nsh_output(vtbl, "%3s %-8s %-7s %3s %-8s %-9s ", status.td_priority, status.td_policy, status.td_type, status.td_flags, status.td_state, status.td_event); #ifndef CONFIG_DISABLE_SIGNALS nsh_output(vtbl, "%-8s ", status.td_sigmask); #endif #if !defined(CONFIG_NSH_DISABLE_PSSTACKUSAGE) /* Get the StackSize and StackUsed */ stack_size = 0; stack_used = 0; filepath = NULL; ret = asprintf(&filepath, "%s/%s/stack", dirpath, entryp->d_name); if (ret < 0 || filepath == NULL) { nsh_output(vtbl, g_fmtcmdfailed, "ps", "asprintf", NSH_ERRNO); vtbl->iobuffer[0] = '\0'; } else { ret = nsh_readfile(vtbl, "ps", filepath, vtbl->iobuffer, IOBUFFERSIZE); free(filepath); if (ret >= 0) { nextline = vtbl->iobuffer; do { /* Find the beginning of the next line and NUL-terminate the * current line. */ line = nextline; for (nextline++; *nextline != '\n' && *nextline != '\0'; nextline++); if (*nextline == '\n') { *nextline++ = '\0'; } else { nextline = NULL; } /* Parse the current line * * Format: * * 111111111122222222223 * 123456789012345678901234567890 * StackBase: xxxxxxxxxx * StackSize: xxxx * StackUsed: xxxx */ if (strncmp(line, g_stacksize, strlen(g_stacksize)) == 0) { stack_size = atoi(&line[12]); } else if (strncmp(line, g_stackused, strlen(g_stackused)) == 0) { stack_used = atoi(&line[12]); } } while (nextline != NULL); } } nsh_output(vtbl, "%6.6d ", stack_size); nsh_output(vtbl, "%6.6d ", stack_used); stack_filled = 0.0; if (stack_size && stack_used) { stack_filled = (100.0 / stack_size * stack_used); } /* Additionally print a "!" if the stack is filled more than 80% */ nsh_output(vtbl, "%5.1f%%%s ", (double)stack_filled, (stack_filled >= 80 ? "!" : " ")); #endif #ifdef NSH_HAVE_CPULOAD /* Get the CPU load */ filepath = NULL; ret = asprintf(&filepath, "%s/%s/loadavg", dirpath, entryp->d_name); if (ret < 0 || filepath == NULL) { nsh_output(vtbl, g_fmtcmdfailed, "ps", "asprintf", NSH_ERRNO); vtbl->iobuffer[0] = '\0'; } else { ret = nsh_readfile(vtbl, "ps", filepath, vtbl->iobuffer, IOBUFFERSIZE); free(filepath); if (ret < 0) { vtbl->iobuffer[0] = '\0'; } } nsh_output(vtbl, "%6s ", nsh_trimspaces(vtbl->iobuffer)); #endif /* Read the task/tread command line */ filepath = NULL; ret = asprintf(&filepath, "%s/%s/cmdline", dirpath, entryp->d_name); if (ret < 0 || filepath == NULL) { nsh_output(vtbl, g_fmtcmdfailed, "ps", "asprintf", NSH_ERRNO); return ERROR; } ret = nsh_readfile(vtbl, "ps", filepath, vtbl->iobuffer, IOBUFFERSIZE); free(filepath); if (ret < 0) { return ERROR; } nsh_output(vtbl, "%s\n", nsh_trimspaces(vtbl->iobuffer)); return OK; } #endif /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: cmd_exec ****************************************************************************/ #ifndef CONFIG_NSH_DISABLE_EXEC int cmd_exec(FAR struct nsh_vtbl_s *vtbl, int argc, FAR char **argv) { FAR char *endptr; uintptr_t addr; addr = (uintptr_t)strtol(argv[1], &endptr, 0); if (!addr || endptr == argv[1] || *endptr != '\0') { nsh_output(vtbl, g_fmtarginvalid, argv[0]); return ERROR; } nsh_output(vtbl, "Calling %p\n", (exec_t)addr); return ((exec_t)addr)(); } #endif /**************************************************************************** * Name: cmd_ps ****************************************************************************/ #ifndef CONFIG_NSH_DISABLE_PS int cmd_ps(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv) { nsh_output(vtbl, "%5s ", "PID"); #ifdef CONFIG_SCHED_HAVE_PARENT #ifdef HAVE_GROUPID nsh_output(vtbl, "%5s ", "GROUP"); #else nsh_output(vtbl, "%5s ", "PPID"); #endif #endif #ifdef CONFIG_SMP nsh_output(vtbl, "%3s ", "CPU"); #endif nsh_output(vtbl, "%3s %-8s %-7s %3s %-8s %-9s ", "PRI", "POLICY", "TYPE", "NPX", "STATE", "EVENT"); #ifndef CONFIG_DISABLE_SIGNALS nsh_output(vtbl, "%-8s ", "SIGMASK"); #endif #if !defined(CONFIG_NSH_DISABLE_PSSTACKUSAGE) nsh_output(vtbl, "%6s ", "STACK"); nsh_output(vtbl, "%6s ", "USED"); nsh_output(vtbl, "%7s ", "FILLED"); #endif #ifdef NSH_HAVE_CPULOAD nsh_output(vtbl, "%6s ", "CPU"); #endif nsh_output(vtbl, "%s\n", "COMMAND"); return nsh_foreach_direntry(vtbl, "ps", CONFIG_NSH_PROC_MOUNTPOINT, ps_callback, NULL); } #endif /**************************************************************************** * Name: cmd_kill ****************************************************************************/ #ifndef CONFIG_DISABLE_SIGNALS #ifndef CONFIG_NSH_DISABLE_KILL int cmd_kill(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv) { char *ptr; char *endptr; long signal; long pid; /* Check incoming parameters. The first parameter should be "-" */ ptr = argv[1]; if (*ptr != '-' || ptr[1] < '0' || ptr[1] > '9') { goto invalid_arg; } /* Extract the signal number */ signal = strtol(&ptr[1], &endptr, 0); /* The second parameter should be */ ptr = argv[2]; if (*ptr < '0' || *ptr > '9') { goto invalid_arg; } /* Extract athe pid */ pid = strtol(ptr, &endptr, 0); /* Send the signal. Kill return values: * * EINVAL An invalid signal was specified. * EPERM The process does not have permission to send the signal to any * of the target processes. * ESRCH The pid or process group does not exist. * ENOSYS Do not support sending signals to process groups. */ if (kill((pid_t)pid, (int)signal) == 0) { return OK; } switch (errno) { case EINVAL: goto invalid_arg; case ESRCH: nsh_output(vtbl, g_fmtnosuch, argv[0], "task", argv[2]); return ERROR; case EPERM: case ENOSYS: default: nsh_output(vtbl, g_fmtcmdfailed, argv[0], "kill", NSH_ERRNO); return ERROR; } invalid_arg: nsh_output(vtbl, g_fmtarginvalid, argv[0]); return ERROR; } #endif #endif /**************************************************************************** * Name: cmd_sleep ****************************************************************************/ #ifndef CONFIG_DISABLE_SIGNALS #ifndef CONFIG_NSH_DISABLE_SLEEP int cmd_sleep(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv) { char *endptr; long secs; secs = strtol(argv[1], &endptr, 0); if (!secs || endptr == argv[1] || *endptr != '\0') { nsh_output(vtbl, g_fmtarginvalid, argv[0]); return ERROR; } sleep(secs); return OK; } #endif #endif /**************************************************************************** * Name: cmd_usleep ****************************************************************************/ #ifndef CONFIG_DISABLE_SIGNALS #ifndef CONFIG_NSH_DISABLE_USLEEP int cmd_usleep(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv) { char *endptr; long usecs; usecs = strtol(argv[1], &endptr, 0); if (!usecs || endptr == argv[1] || *endptr != '\0') { nsh_output(vtbl, g_fmtarginvalid, argv[0]); return ERROR; } usleep(usecs); return OK; } #endif #endif