From b74673fe37fd379fc350789e696470556776d815 Mon Sep 17 00:00:00 2001 From: Nathan Scott Date: Thu, 31 Aug 2023 11:56:43 +1000 Subject: Rename ProcessList to ProcessTable throughout Following up with some discusson from a few months back, where it was proposed that ProcessTable is a better name. This data structure is definitely not a list ... if it was one-dimensional it'd be a set, but in practice it has much more in common with a two-dimensional table. The Process table is a familiar operating system concept for many people too so it resonates a little in that way as well. --- linux/LinuxProcessList.c | 1642 ---------------------------------------------- 1 file changed, 1642 deletions(-) delete mode 100644 linux/LinuxProcessList.c (limited to 'linux/LinuxProcessList.c') diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c deleted file mode 100644 index 9be2433e..00000000 --- a/linux/LinuxProcessList.c +++ /dev/null @@ -1,1642 +0,0 @@ -/* -htop - LinuxProcessList.c -(C) 2014 Hisham H. Muhammad -Released under the GNU GPLv2+, see the COPYING file -in the source distribution for its full text. -*/ - -#include "config.h" // IWYU pragma: keep - -#include "linux/LinuxProcessList.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifdef HAVE_DELAYACCT -#include -#include -#include -#include -#include -#include -#include -#include -#include -#endif - -#include "Compat.h" -#include "CRT.h" -#include "Macros.h" -#include "Object.h" -#include "Process.h" -#include "Scheduling.h" -#include "Settings.h" -#include "XUtils.h" -#include "linux/CGroupUtils.h" -#include "linux/LinuxMachine.h" -#include "linux/LinuxProcess.h" -#include "linux/Platform.h" // needed for GNU/hurd to get PATH_MAX // IWYU pragma: keep - -#if defined(MAJOR_IN_MKDEV) -#include -#elif defined(MAJOR_IN_SYSMACROS) -#include -#endif - -/* Not exposed yet. Defined at include/linux/sched.h */ -#ifndef PF_KTHREAD -#define PF_KTHREAD 0x00200000 -#endif - -static FILE* fopenat(openat_arg_t openatArg, const char* pathname, const char* mode) { - assert(String_eq(mode, "r")); /* only currently supported mode */ - - int fd = Compat_openat(openatArg, pathname, O_RDONLY); - if (fd < 0) - return NULL; - - FILE* stream = fdopen(fd, mode); - if (!stream) - close(fd); - - return stream; -} - -static inline uint64_t fast_strtoull_dec(char** str, int maxlen) { - register uint64_t result = 0; - - if (!maxlen) - --maxlen; - - while (maxlen-- && **str >= '0' && **str <= '9') { - result *= 10; - result += **str - '0'; - (*str)++; - } - - return result; -} - -static inline uint64_t fast_strtoull_hex(char** str, int maxlen) { - register uint64_t result = 0; - register int nibble, letter; - const long valid_mask = 0x03FF007E; - - if (!maxlen) - --maxlen; - - while (maxlen--) { - nibble = (unsigned char)**str; - if (!(valid_mask & (1 << (nibble & 0x1F)))) - break; - if ((nibble < '0') || (nibble & ~0x20) > 'F') - break; - letter = (nibble & 0x40) ? 'A' - '9' - 1 : 0; - nibble &=~0x20; // to upper - nibble ^= 0x10; // switch letters and digits - nibble -= letter; - nibble &= 0x0f; - result <<= 4; - result += (uint64_t)nibble; - (*str)++; - } - - return result; -} - -static int sortTtyDrivers(const void* va, const void* vb) { - const TtyDriver* a = (const TtyDriver*) va; - const TtyDriver* b = (const TtyDriver*) vb; - - int r = SPACESHIP_NUMBER(a->major, b->major); - if (r) - return r; - - return SPACESHIP_NUMBER(a->minorFrom, b->minorFrom); -} - -static void LinuxProcessList_initTtyDrivers(LinuxProcessList* this) { - TtyDriver* ttyDrivers; - - char buf[16384]; - ssize_t r = xReadfile(PROCTTYDRIVERSFILE, buf, sizeof(buf)); - if (r < 0) - return; - - int numDrivers = 0; - int allocd = 10; - ttyDrivers = xMallocArray(allocd, sizeof(TtyDriver)); - char* at = buf; - while (*at != '\0') { - at = strchr(at, ' '); // skip first token - while (*at == ' ') at++; // skip spaces - const char* token = at; // mark beginning of path - at = strchr(at, ' '); // find end of path - *at = '\0'; at++; // clear and skip - ttyDrivers[numDrivers].path = xStrdup(token); // save - while (*at == ' ') at++; // skip spaces - token = at; // mark beginning of major - at = strchr(at, ' '); // find end of major - *at = '\0'; at++; // clear and skip - ttyDrivers[numDrivers].major = atoi(token); // save - while (*at == ' ') at++; // skip spaces - token = at; // mark beginning of minorFrom - while (*at >= '0' && *at <= '9') at++; //find end of minorFrom - if (*at == '-') { // if has range - *at = '\0'; at++; // clear and skip - ttyDrivers[numDrivers].minorFrom = atoi(token); // save - token = at; // mark beginning of minorTo - at = strchr(at, ' '); // find end of minorTo - *at = '\0'; at++; // clear and skip - ttyDrivers[numDrivers].minorTo = atoi(token); // save - } else { // no range - *at = '\0'; at++; // clear and skip - ttyDrivers[numDrivers].minorFrom = atoi(token); // save - ttyDrivers[numDrivers].minorTo = atoi(token); // save - } - at = strchr(at, '\n'); // go to end of line - at++; // skip - numDrivers++; - if (numDrivers == allocd) { - allocd += 10; - ttyDrivers = xReallocArray(ttyDrivers, allocd, sizeof(TtyDriver)); - } - } - numDrivers++; - ttyDrivers = xRealloc(ttyDrivers, sizeof(TtyDriver) * numDrivers); - ttyDrivers[numDrivers - 1].path = NULL; - qsort(ttyDrivers, numDrivers - 1, sizeof(TtyDriver), sortTtyDrivers); - this->ttyDrivers = ttyDrivers; -} - -#ifdef HAVE_DELAYACCT - -static void LinuxProcessList_initNetlinkSocket(LinuxProcessList* this) { - this->netlink_socket = nl_socket_alloc(); - if (this->netlink_socket == NULL) { - return; - } - if (nl_connect(this->netlink_socket, NETLINK_GENERIC) < 0) { - return; - } - this->netlink_family = genl_ctrl_resolve(this->netlink_socket, TASKSTATS_GENL_NAME); -} - -#endif - -ProcessList* ProcessList_new(Machine* host, Hashtable* pidMatchList) { - LinuxProcessList* this = xCalloc(1, sizeof(LinuxProcessList)); - Object_setClass(this, Class(ProcessList)); - - ProcessList* super = &this->super; - ProcessList_init(super, Class(LinuxProcess), host, pidMatchList); - - LinuxProcessList_initTtyDrivers(this); - - // Test /proc/PID/smaps_rollup availability (faster to parse, Linux 4.14+) - this->haveSmapsRollup = (access(PROCDIR "/self/smaps_rollup", R_OK) == 0); - - return super; -} - -void ProcessList_delete(Object* cast) { - LinuxProcessList* this = (LinuxProcessList*) cast; - ProcessList_done(&this->super); - if (this->ttyDrivers) { - for (int i = 0; this->ttyDrivers[i].path; i++) { - free(this->ttyDrivers[i].path); - } - free(this->ttyDrivers); - } - #ifdef HAVE_DELAYACCT - if (this->netlink_socket) { - nl_close(this->netlink_socket); - nl_socket_free(this->netlink_socket); - } - #endif - free(this); -} - -static inline unsigned long long LinuxProcessList_adjustTime(const LinuxMachine* lhost, unsigned long long t) { - return t * 100 / lhost->jiffies; -} - -/* Taken from: https://github.com/torvalds/linux/blob/64570fbc14f8d7cb3fe3995f20e26bc25ce4b2cc/fs/proc/array.c#L120 */ -static inline ProcessState LinuxProcessList_getProcessState(char state) { - switch (state) { - case 'S': return SLEEPING; - case 'X': return DEFUNCT; - case 'Z': return ZOMBIE; - case 't': return TRACED; - case 'T': return STOPPED; - case 'D': return UNINTERRUPTIBLE_WAIT; - case 'R': return RUNNING; - case 'P': return BLOCKED; - case 'I': return IDLE; - default: return UNKNOWN; - } -} - -static bool LinuxProcessList_readStatFile(LinuxProcess* lp, openat_arg_t procFd, const LinuxMachine* lhost, bool scanMainThread, char* command, size_t commLen) { - Process* process = &lp->super; - - char buf[MAX_READ + 1]; - char path[22] = "stat"; - if (scanMainThread) { - xSnprintf(path, sizeof(path), "task/%"PRIi32"/stat", (int32_t)Process_getPid(process)); - } - ssize_t r = xReadfileat(procFd, path, buf, sizeof(buf)); - if (r < 0) - return false; - - /* (1) pid - %d */ - assert(Process_getPid(process) == atoi(buf)); - char* location = strchr(buf, ' '); - if (!location) - return false; - - /* (2) comm - (%s) */ - location += 2; - char* end = strrchr(location, ')'); - if (!end) - return false; - - String_safeStrncpy(command, location, MINIMUM((size_t)(end - location + 1), commLen)); - - location = end + 2; - - /* (3) state - %c */ - process->state = LinuxProcessList_getProcessState(location[0]); - location += 2; - - /* (4) ppid - %d */ - Process_setParent(process, strtol(location, &location, 10)); - location += 1; - - /* (5) pgrp - %d */ - process->pgrp = strtol(location, &location, 10); - location += 1; - - /* (6) session - %d */ - process->session = strtol(location, &location, 10); - location += 1; - - /* (7) tty_nr - %d */ - process->tty_nr = strtoul(location, &location, 10); - location += 1; - - /* (8) tpgid - %d */ - process->tpgid = strtol(location, &location, 10); - location += 1; - - /* (9) flags - %u */ - lp->flags = strtoul(location, &location, 10); - location += 1; - - /* (10) minflt - %lu */ - process->minflt = strtoull(location, &location, 10); - location += 1; - - /* (11) cminflt - %lu */ - lp->cminflt = strtoull(location, &location, 10); - location += 1; - - /* (12) majflt - %lu */ - process->majflt = strtoull(location, &location, 10); - location += 1; - - /* (13) cmajflt - %lu */ - lp->cmajflt = strtoull(location, &location, 10); - location += 1; - - /* (14) utime - %lu */ - lp->utime = LinuxProcessList_adjustTime(lhost, strtoull(location, &location, 10)); - location += 1; - - /* (15) stime - %lu */ - lp->stime = LinuxProcessList_adjustTime(lhost, strtoull(location, &location, 10)); - location += 1; - - /* (16) cutime - %ld */ - lp->cutime = LinuxProcessList_adjustTime(lhost, strtoull(location, &location, 10)); - location += 1; - - /* (17) cstime - %ld */ - lp->cstime = LinuxProcessList_adjustTime(lhost, strtoull(location, &location, 10)); - location += 1; - - /* (18) priority - %ld */ - process->priority = strtol(location, &location, 10); - location += 1; - - /* (19) nice - %ld */ - process->nice = strtol(location, &location, 10); - location += 1; - - /* (20) num_threads - %ld */ - process->nlwp = strtol(location, &location, 10); - location += 1; - - /* Skip (21) itrealvalue - %ld */ - location = strchr(location, ' ') + 1; - - /* (22) starttime - %llu */ - if (process->starttime_ctime == 0) { - process->starttime_ctime = lhost->boottime + LinuxProcessList_adjustTime(lhost, strtoll(location, &location, 10)) / 100; - } else { - location = strchr(location, ' '); - } - location += 1; - - /* Skip (23) - (38) */ - for (int i = 0; i < 16; i++) { - location = strchr(location, ' ') + 1; - } - - assert(location != NULL); - - /* (39) processor - %d */ - process->processor = strtol(location, &location, 10); - - /* Ignore further fields */ - - process->time = lp->utime + lp->stime; - - return true; -} - -static bool LinuxProcessList_readStatusFile(Process* process, openat_arg_t procFd) { - LinuxProcess* lp = (LinuxProcess*) process; - - unsigned long ctxt = 0; -#ifdef HAVE_VSERVER - lp->vxid = 0; -#endif - - FILE* statusfile = fopenat(procFd, "status", "r"); - if (!statusfile) - return false; - - char buffer[PROC_LINE_LENGTH + 1]; - - while (fgets(buffer, sizeof(buffer), statusfile)) { - - if (String_startsWith(buffer, "NSpid:")) { - const char* ptr = buffer; - int pid_ns_count = 0; - while (*ptr && *ptr != '\n' && !isdigit((unsigned char)*ptr)) - ++ptr; - - while (*ptr && *ptr != '\n') { - if (isdigit(*ptr)) - pid_ns_count++; - while (isdigit((unsigned char)*ptr)) - ++ptr; - while (*ptr && *ptr != '\n' && !isdigit((unsigned char)*ptr)) - ++ptr; - } - - if (pid_ns_count > 1) - process->isRunningInContainer = true; - - } else if (String_startsWith(buffer, "CapPrm:")) { - char* ptr = buffer + strlen("CapPrm:"); - while (*ptr == ' ' || *ptr == '\t') - ptr++; - - uint64_t cap_permitted = fast_strtoull_hex(&ptr, 16); - process->elevated_priv = cap_permitted != 0 && process->st_uid != 0; - - } else if (String_startsWith(buffer, "voluntary_ctxt_switches:")) { - unsigned long vctxt; - int ok = sscanf(buffer, "voluntary_ctxt_switches:\t%lu", &vctxt); - if (ok >= 1) { - ctxt += vctxt; - } - - } else if (String_startsWith(buffer, "nonvoluntary_ctxt_switches:")) { - unsigned long nvctxt; - int ok = sscanf(buffer, "nonvoluntary_ctxt_switches:\t%lu", &nvctxt); - if (ok >= 1) { - ctxt += nvctxt; - } - -#ifdef HAVE_VSERVER - } else if (String_startsWith(buffer, "VxID:")) { - int vxid; - int ok = sscanf(buffer, "VxID:\t%32d", &vxid); - if (ok >= 1) { - lp->vxid = vxid; - } -#ifdef HAVE_ANCIENT_VSERVER - } else if (String_startsWith(buffer, "s_context:")) { - int vxid; - int ok = sscanf(buffer, "s_context:\t%32d", &vxid); - if (ok >= 1) { - lp->vxid = vxid; - } -#endif /* HAVE_ANCIENT_VSERVER */ -#endif /* HAVE_VSERVER */ - } - } - - fclose(statusfile); - - lp->ctxt_diff = (ctxt > lp->ctxt_total) ? (ctxt - lp->ctxt_total) : 0; - lp->ctxt_total = ctxt; - - return true; -} - -static bool LinuxProcessList_updateUser(const Machine* host, Process* process, openat_arg_t procFd) { - struct stat sstat; -#ifdef HAVE_OPENAT - int statok = fstat(procFd, &sstat); -#else - int statok = stat(procFd, &sstat); -#endif - if (statok == -1) - return false; - - if (process->st_uid != sstat.st_uid) { - process->st_uid = sstat.st_uid; - process->user = UsersTable_getRef(host->usersTable, sstat.st_uid); - } - - return true; -} - -static void LinuxProcessList_readIoFile(LinuxProcess* lp, openat_arg_t procFd, bool scanMainThread) { - Process* process = &lp->super; - const Machine* host = process->super.host; - char path[20] = "io"; - char buffer[1024]; - if (scanMainThread) { - xSnprintf(path, sizeof(path), "task/%"PRIi32"/io", (int32_t)Process_getPid(process)); - } - ssize_t r = xReadfileat(procFd, path, buffer, sizeof(buffer)); - if (r < 0) { - lp->io_rate_read_bps = NAN; - lp->io_rate_write_bps = NAN; - lp->io_rchar = ULLONG_MAX; - lp->io_wchar = ULLONG_MAX; - lp->io_syscr = ULLONG_MAX; - lp->io_syscw = ULLONG_MAX; - lp->io_read_bytes = ULLONG_MAX; - lp->io_write_bytes = ULLONG_MAX; - lp->io_cancelled_write_bytes = ULLONG_MAX; - lp->io_last_scan_time_ms = host->realtimeMs; - return; - } - - unsigned long long last_read = lp->io_read_bytes; - unsigned long long last_write = lp->io_write_bytes; - unsigned long long time_delta = saturatingSub(host->realtimeMs, lp->io_last_scan_time_ms); - - // Note: Linux Kernel documentation states that /proc//io may be racy - // on 32-bit machines. (Documentation/filesystems/proc.rst) - - char* buf = buffer; - const char* line; - while ((line = strsep(&buf, "\n")) != NULL) { - switch (line[0]) { - case 'r': - if (line[1] == 'c' && String_startsWith(line + 2, "har: ")) { - lp->io_rchar = strtoull(line + 7, NULL, 10); - } else if (String_startsWith(line + 1, "ead_bytes: ")) { - lp->io_read_bytes = strtoull(line + 12, NULL, 10); - lp->io_rate_read_bps = time_delta ? saturatingSub(lp->io_read_bytes, last_read) * /*ms to s*/1000. / time_delta : NAN; - } - break; - case 'w': - if (line[1] == 'c' && String_startsWith(line + 2, "har: ")) { - lp->io_wchar = strtoull(line + 7, NULL, 10); - } else if (String_startsWith(line + 1, "rite_bytes: ")) { - lp->io_write_bytes = strtoull(line + 13, NULL, 10); - lp->io_rate_write_bps = time_delta ? saturatingSub(lp->io_write_bytes, last_write) * /*ms to s*/1000. / time_delta : NAN; - } - break; - case 's': - if (line[4] == 'r' && String_startsWith(line + 1, "yscr: ")) { - lp->io_syscr = strtoull(line + 7, NULL, 10); - } else if (String_startsWith(line + 1, "yscw: ")) { - lp->io_syscw = strtoull(line + 7, NULL, 10); - } - break; - case 'c': - if (String_startsWith(line + 1, "ancelled_write_bytes: ")) { - lp->io_cancelled_write_bytes = strtoull(line + 23, NULL, 10); - } - } - } - - lp->io_last_scan_time_ms = host->realtimeMs; -} - -typedef struct LibraryData_ { - uint64_t size; - bool exec; -} LibraryData; - -static void LinuxProcessList_calcLibSize_helper(ATTR_UNUSED ht_key_t key, void* value, void* data) { - if (!data) - return; - - if (!value) - return; - - const LibraryData* v = (const LibraryData*)value; - uint64_t* d = (uint64_t*)data; - if (!v->exec) - return; - - *d += v->size; -} - -static void LinuxProcessList_readMaps(LinuxProcess* process, openat_arg_t procFd, const LinuxMachine* host, bool calcSize, bool checkDeletedLib) { - Process* proc = (Process*)process; - - proc->usesDeletedLib = false; - - FILE* mapsfile = fopenat(procFd, "maps", "r"); - if (!mapsfile) - return; - - Hashtable* ht = NULL; - if (calcSize) - ht = Hashtable_new(64, true); - - char buffer[1024]; - while (fgets(buffer, sizeof(buffer), mapsfile)) { - uint64_t map_start; - uint64_t map_end; - bool map_execute; - unsigned int map_devmaj; - unsigned int map_devmin; - uint64_t map_inode; - - // Short circuit test: Look for a slash - if (!strchr(buffer, '/')) - continue; - - // Parse format: "%Lx-%Lx %4s %x %2x:%2x %Ld" - char* readptr = buffer; - - map_start = fast_strtoull_hex(&readptr, 16); - if ('-' != *readptr++) - continue; - - map_end = fast_strtoull_hex(&readptr, 16); - if (' ' != *readptr++) - continue; - - map_execute = (readptr[2] == 'x'); - readptr += 4; - if (' ' != *readptr++) - continue; - - while (*readptr > ' ') - readptr++; // Skip parsing this hex value - if (' ' != *readptr++) - continue; - - map_devmaj = fast_strtoull_hex(&readptr, 4); - if (':' != *readptr++) - continue; - - map_devmin = fast_strtoull_hex(&readptr, 4); - if (' ' != *readptr++) - continue; - - //Minor shortcut: Once we know there's no file for this region, we skip - if (!map_devmaj && !map_devmin) - continue; - - map_inode = fast_strtoull_dec(&readptr, 20); - if (!map_inode) - continue; - - if (calcSize) { - LibraryData* libdata = Hashtable_get(ht, map_inode); - if (!libdata) { - libdata = xCalloc(1, sizeof(LibraryData)); - Hashtable_put(ht, map_inode, libdata); - } - - libdata->size += map_end - map_start; - libdata->exec |= map_execute; - } - - if (checkDeletedLib && map_execute && !proc->usesDeletedLib) { - while (*readptr == ' ') - readptr++; - - if (*readptr != '/') - continue; - - if (String_startsWith(readptr, "/memfd:")) - continue; - - /* Virtualbox maps /dev/zero for memory allocation. That results in - * false positive, so ignore. */ - if (String_eq(readptr, "/dev/zero (deleted)\n")) - continue; - - if (strstr(readptr, " (deleted)\n")) { - proc->usesDeletedLib = true; - if (!calcSize) - break; - } - } - } - - fclose(mapsfile); - - if (calcSize) { - uint64_t total_size = 0; - Hashtable_foreach(ht, LinuxProcessList_calcLibSize_helper, &total_size); - - Hashtable_delete(ht); - - process->m_lrs = total_size / host->pageSize; - } -} - -static bool LinuxProcessList_readStatmFile(LinuxProcess* process, openat_arg_t procFd, const LinuxMachine* host) { - FILE* statmfile = fopenat(procFd, "statm", "r"); - if (!statmfile) - return false; - - long int dummy, dummy2; - - int r = fscanf(statmfile, "%ld %ld %ld %ld %ld %ld %ld", - &process->super.m_virt, - &process->super.m_resident, - &process->m_share, - &process->m_trs, - &dummy, /* unused since Linux 2.6; always 0 */ - &process->m_drs, - &dummy2); /* unused since Linux 2.6; always 0 */ - fclose(statmfile); - - if (r == 7) { - process->super.m_virt *= host->pageSizeKB; - process->super.m_resident *= host->pageSizeKB; - } - - return r == 7; -} - -static bool LinuxProcessList_readSmapsFile(LinuxProcess* process, openat_arg_t procFd, bool haveSmapsRollup) { - //http://elixir.free-electrons.com/linux/v4.10/source/fs/proc/task_mmu.c#L719 - //kernel will return data in chunks of size PAGE_SIZE or less. - FILE* f = fopenat(procFd, haveSmapsRollup ? "smaps_rollup" : "smaps", "r"); - if (!f) - return false; - - process->m_pss = 0; - process->m_swap = 0; - process->m_psswp = 0; - - char buffer[256]; - while (fgets(buffer, sizeof(buffer), f)) { - if (!strchr(buffer, '\n')) { - // Partial line, skip to end of this line - while (fgets(buffer, sizeof(buffer), f)) { - if (strchr(buffer, '\n')) { - break; - } - } - continue; - } - - if (String_startsWith(buffer, "Pss:")) { - process->m_pss += strtol(buffer + 4, NULL, 10); - } else if (String_startsWith(buffer, "Swap:")) { - process->m_swap += strtol(buffer + 5, NULL, 10); - } else if (String_startsWith(buffer, "SwapPss:")) { - process->m_psswp += strtol(buffer + 8, NULL, 10); - } - } - - fclose(f); - return true; -} - -#ifdef HAVE_OPENVZ - -static void LinuxProcessList_readOpenVZData(LinuxProcess* process, openat_arg_t procFd) { - if (access(PROCDIR "/vz", R_OK) != 0) { - free(process->ctid); - process->ctid = NULL; - process->vpid = Process_getPid(&process->super); - return; - } - - FILE* file = fopenat(procFd, "status", "r"); - if (!file) { - free(process->ctid); - process->ctid = NULL; - process->vpid = Process_getPid(&process->super); - return; - } - - bool foundEnvID = false; - bool foundVPid = false; - char linebuf[256]; - while (fgets(linebuf, sizeof(linebuf), file) != NULL) { - if (strchr(linebuf, '\n') == NULL) { - // Partial line, skip to end of this line - while (fgets(linebuf, sizeof(linebuf), file) != NULL) { - if (strchr(linebuf, '\n') != NULL) { - break; - } - } - continue; - } - - char* name_value_sep = strchr(linebuf, ':'); - if (name_value_sep == NULL) { - continue; - } - - int field; - if (0 == strncasecmp(linebuf, "envID", name_value_sep - linebuf)) { - field = 1; - } else if (0 == strncasecmp(linebuf, "VPid", name_value_sep - linebuf)) { - field = 2; - } else { - continue; - } - - do { - name_value_sep++; - } while (*name_value_sep != '\0' && *name_value_sep <= 32); - - char* value_end = name_value_sep; - - while (*value_end > 32) { - value_end++; - } - - if (name_value_sep == value_end) { - continue; - } - - *value_end = '\0'; - - switch (field) { - case 1: - foundEnvID = true; - if (!String_eq(name_value_sep, process->ctid ? process->ctid : "")) - free_and_xStrdup(&process->ctid, name_value_sep); - break; - case 2: - foundVPid = true; - process->vpid = strtoul(name_value_sep, NULL, 0); - break; - default: - //Sanity Check: Should never reach here, or the implementation is missing something! - assert(false && "OpenVZ handling: Unimplemented case for field handling reached."); - } - } - - fclose(file); - - if (!foundEnvID) { - free(process->ctid); - process->ctid = NULL; - } - - if (!foundVPid) { - process->vpid = Process_getPid(&process->super); - } -} - -#endif - -static void LinuxProcessList_readCGroupFile(LinuxProcess* process, openat_arg_t procFd) { - FILE* file = fopenat(procFd, "cgroup", "r"); - if (!file) { - if (process->cgroup) { - free(process->cgroup); - process->cgroup = NULL; - } - if (process->cgroup_short) { - free(process->cgroup_short); - process->cgroup_short = NULL; - } - return; - } - char output[PROC_LINE_LENGTH + 1]; - output[0] = '\0'; - char* at = output; - int left = PROC_LINE_LENGTH; - while (!feof(file) && left > 0) { - char buffer[PROC_LINE_LENGTH + 1]; - const char* ok = fgets(buffer, PROC_LINE_LENGTH, file); - if (!ok) - break; - - char* group = buffer; - for (size_t i = 0; i < 2; i++) { - group = strchrnul(group, ':'); - if (!*group) - break; - group++; - } - - char* eol = strchrnul(group, '\n'); - *eol = '\0'; - - if (at != output) { - *at = ';'; - at++; - left--; - } - int wrote = snprintf(at, left, "%s", group); - left -= wrote; - } - fclose(file); - - bool changed = !process->cgroup || !String_eq(process->cgroup, output); - - Row_updateFieldWidth(CGROUP, strlen(output)); - free_and_xStrdup(&process->cgroup, output); - - if (!changed) { - if (process->cgroup_short) { - Row_updateFieldWidth(CCGROUP, strlen(process->cgroup_short)); - } else { - //CCGROUP is alias to normal CGROUP if shortening fails - Row_updateFieldWidth(CCGROUP, strlen(process->cgroup)); - } - return; - } - - char* cgroup_short = CGroup_filterName(process->cgroup); - if (cgroup_short) { - Row_updateFieldWidth(CCGROUP, strlen(cgroup_short)); - free_and_xStrdup(&process->cgroup_short, cgroup_short); - free(cgroup_short); - } else { - //CCGROUP is alias to normal CGROUP if shortening fails - Row_updateFieldWidth(CCGROUP, strlen(process->cgroup)); - free(process->cgroup_short); - process->cgroup_short = NULL; - } -} - -static void LinuxProcessList_readOomData(LinuxProcess* process, openat_arg_t procFd) { - FILE* file = fopenat(procFd, "oom_score", "r"); - if (!file) - return; - - char buffer[PROC_LINE_LENGTH + 1]; - if (fgets(buffer, PROC_LINE_LENGTH, file)) { - unsigned int oom; - int ok = sscanf(buffer, "%u", &oom); - if (ok >= 1) { - process->oom = oom; - } - } - fclose(file); -} - -static void LinuxProcessList_readAutogroup(LinuxProcess* process, openat_arg_t procFd) { - process->autogroup_id = -1; - - char autogroup[64]; // space for two numeric values and fixed length strings - ssize_t amtRead = xReadfileat(procFd, "autogroup", autogroup, sizeof(autogroup)); - if (amtRead < 0) - return; - - long int identity; - int nice; - int ok = sscanf(autogroup, "/autogroup-%ld nice %d", &identity, &nice); - if (ok == 2) { - process->autogroup_id = identity; - process->autogroup_nice = nice; - } -} - -static void LinuxProcessList_readSecattrData(LinuxProcess* process, openat_arg_t procFd) { - FILE* file = fopenat(procFd, "attr/current", "r"); - if (!file) { - free(process->secattr); - process->secattr = NULL; - return; - } - - char buffer[PROC_LINE_LENGTH + 1]; - const char* res = fgets(buffer, sizeof(buffer), file); - fclose(file); - if (!res) { - free(process->secattr); - process->secattr = NULL; - return; - } - char* newline = strchr(buffer, '\n'); - if (newline) { - *newline = '\0'; - } - - Row_updateFieldWidth(SECATTR, strlen(buffer)); - - if (process->secattr && String_eq(process->secattr, buffer)) { - return; - } - free_and_xStrdup(&process->secattr, buffer); -} - -static void LinuxProcessList_readCwd(LinuxProcess* process, openat_arg_t procFd) { - char pathBuffer[PATH_MAX + 1] = {0}; - -#if defined(HAVE_READLINKAT) && defined(HAVE_OPENAT) - ssize_t r = readlinkat(procFd, "cwd", pathBuffer, sizeof(pathBuffer) - 1); -#else - ssize_t r = Compat_readlink(procFd, "cwd", pathBuffer, sizeof(pathBuffer) - 1); -#endif - - if (r < 0) { - free(process->super.procCwd); - process->super.procCwd = NULL; - return; - } - - pathBuffer[r] = '\0'; - - if (process->super.procCwd && String_eq(process->super.procCwd, pathBuffer)) - return; - - free_and_xStrdup(&process->super.procCwd, pathBuffer); -} - -#ifdef HAVE_DELAYACCT - -static int handleNetlinkMsg(struct nl_msg* nlmsg, void* linuxProcess) { - struct nlmsghdr* nlhdr; - struct nlattr* nlattrs[TASKSTATS_TYPE_MAX + 1]; - const struct nlattr* nlattr; - struct taskstats stats; - int rem; - LinuxProcess* lp = (LinuxProcess*) linuxProcess; - - nlhdr = nlmsg_hdr(nlmsg); - - if (genlmsg_parse(nlhdr, 0, nlattrs, TASKSTATS_TYPE_MAX, NULL) < 0) { - return NL_SKIP; - } - - if ((nlattr = nlattrs[TASKSTATS_TYPE_AGGR_PID]) || (nlattr = nlattrs[TASKSTATS_TYPE_NULL])) { - memcpy(&stats, nla_data(nla_next(nla_data(nlattr), &rem)), sizeof(stats)); - assert(Process_getPid(&lp->super) == (pid_t)stats.ac_pid); - - // The xxx_delay_total values wrap around on overflow. - // (Linux Kernel "Documentation/accounting/taskstats-struct.rst") - unsigned long long int timeDelta = stats.ac_etime * 1000 - lp->delay_read_time; - #define DELTAPERC(x, y) (timeDelta ? MINIMUM((float)((x) - (y)) / timeDelta * 100.0f, 100.0f) : NAN) - lp->cpu_delay_percent = DELTAPERC(stats.cpu_delay_total, lp->cpu_delay_total); - lp->blkio_delay_percent = DELTAPERC(stats.blkio_delay_total, lp->blkio_delay_total); - lp->swapin_delay_percent = DELTAPERC(stats.swapin_delay_total, lp->swapin_delay_total); - #undef DELTAPERC - - lp->swapin_delay_total = stats.swapin_delay_total; - lp->blkio_delay_total = stats.blkio_delay_total; - lp->cpu_delay_total = stats.cpu_delay_total; - lp->delay_read_time = stats.ac_etime * 1000; - } - return NL_OK; -} - -static void LinuxProcessList_readDelayAcctData(LinuxProcessList* this, LinuxProcess* process) { - struct nl_msg* msg; - - if (!this->netlink_socket) { - LinuxProcessList_initNetlinkSocket(this); - if (!this->netlink_socket) { - goto delayacct_failure; - } - } - - if (nl_socket_modify_cb(this->netlink_socket, NL_CB_VALID, NL_CB_CUSTOM, handleNetlinkMsg, process) < 0) { - goto delayacct_failure; - } - - if (! (msg = nlmsg_alloc())) { - goto delayacct_failure; - } - - if (! genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, this->netlink_family, 0, NLM_F_REQUEST, TASKSTATS_CMD_GET, TASKSTATS_VERSION)) { - nlmsg_free(msg); - } - - if (nla_put_u32(msg, TASKSTATS_CMD_ATTR_PID, Process_getPid(&process->super)) < 0) { - nlmsg_free(msg); - } - - if (nl_send_sync(this->netlink_socket, msg) < 0) { - goto delayacct_failure; - } - - if (nl_recvmsgs_default(this->netlink_socket) < 0) { - goto delayacct_failure; - } - - return; - -delayacct_failure: - process->swapin_delay_percent = NAN; - process->blkio_delay_percent = NAN; - process->cpu_delay_percent = NAN; -} - -#endif - -static bool LinuxProcessList_readCmdlineFile(Process* process, openat_arg_t procFd) { - char command[4096 + 1]; // max cmdline length on Linux - ssize_t amtRead = xReadfileat(procFd, "cmdline", command, sizeof(command)); - if (amtRead <= 0) - return false; - - int tokenEnd = 0; - int tokenStart = 0; - int lastChar = 0; - bool argSepNUL = false; - bool argSepSpace = false; - - for (int i = 0; i < amtRead; i++) { - /* newline used as delimiter - when forming the mergedCommand, newline is - * converted to space by Process_makeCommandStr */ - if (command[i] == '\0') { - command[i] = '\n'; - } else { - /* Record some information for the argument parsing heuristic below. */ - if (tokenEnd) - argSepNUL = true; - if (command[i] <= ' ') - argSepSpace = true; - } - - if (command[i] == '\n') { - if (tokenEnd == 0) { - tokenEnd = i; - } - } else { - /* htop considers the next character after the last / that is before - * basenameOffset, as the start of the basename in cmdline - see - * Process_writeCommand */ - if (!tokenEnd && command[i] == '/') { - tokenStart = i + 1; - } - lastChar = i; - } - } - - command[lastChar + 1] = '\0'; - - if (!argSepNUL && argSepSpace) { - /* Argument parsing heuristic. - * - * This heuristic is used for processes that rewrite their command line. - * Normally the command line is split by using NUL bytes between each argument. - * But some programs like chrome flatten this using spaces. - * - * This heuristic tries its best to undo this loss of information. - * To achieve this, we treat every character <= 32 as argument separators - * (i.e. all of ASCII control sequences and space). - * We then search for the basename of the cmdline in the first argument we found that way. - * As path names may contain we try to cross-validate if the path we got that way exists. - */ - - tokenStart = tokenEnd = 0; - - // From initial scan we know there's at least one space. - // Check if that's part of a filename for an existing file. - if (Compat_faccessat(AT_FDCWD, command, F_OK, AT_SYMLINK_NOFOLLOW) != 0) { - // If we reach here the path does not exist. - // Thus begin searching for the part of it that actually is. - - int tokenArg0Start = 0; - - for (int i = 0; i <= lastChar; i++) { - /* Any ASCII control or space used as delimiter */ - char tmpCommandChar = command[i]; - - if (command[i] <= ' ') { - if (!tokenEnd) { - command[i] = '\0'; - - bool found = Compat_faccessat(AT_FDCWD, command, F_OK, AT_SYMLINK_NOFOLLOW) == 0; - - // Restore if this wasn't it - command[i] = found ? '\n' : tmpCommandChar; - - if (found) - tokenEnd = i; - if (!tokenArg0Start) - tokenArg0Start = tokenStart; - } else { - // Split on every further separator, regardless of path correctness - command[i] = '\n'; - } - } else if (!tokenEnd) { - if (command[i] == '/' || (command[i] == '\\' && (!tokenStart || command[tokenStart - 1] == '\\'))) { - tokenStart = i + 1; - } else if (command[i] == ':' && (command[i + 1] != '/' && command[i + 1] != '\\')) { - tokenEnd = i; - } - } - } - - if (!tokenEnd) { - tokenStart = tokenArg0Start; - - // No token delimiter found, forcibly split - for (int i = 0; i <= lastChar; i++) { - if (command[i] <= ' ') { - command[i] = '\n'; - if (!tokenEnd) { - tokenEnd = i; - } - } - } - } - } - - /* Some command lines are hard to parse, like - * file.so [kdeinit5] file local:/run/user/1000/klauncherdqbouY.1.slave-socket local:/run/user/1000/kded5TwsDAx.1.slave-socket - * Reset if start is behind end. - */ - if (tokenStart >= tokenEnd) - tokenStart = tokenEnd = 0; - } - - if (tokenEnd == 0) { - tokenEnd = lastChar + 1; - } - - Process_updateCmdline(process, command, tokenStart, tokenEnd); - - /* /proc/[pid]/comm could change, so should be updated */ - if ((amtRead = xReadfileat(procFd, "comm", command, sizeof(command))) > 0) { - command[amtRead - 1] = '\0'; - Process_updateComm(process, command); - } else { - Process_updateComm(process, NULL); - } - - char filename[MAX_NAME + 1]; - - /* execve could change /proc/[pid]/exe, so procExe should be updated */ -#if defined(HAVE_READLINKAT) && defined(HAVE_OPENAT) - amtRead = readlinkat(procFd, "exe", filename, sizeof(filename) - 1); -#else - amtRead = Compat_readlink(procFd, "exe", filename, sizeof(filename) - 1); -#endif - if (amtRead > 0) { - filename[amtRead] = 0; - if (!process->procExe || - (!process->procExeDeleted && !String_eq(filename, process->procExe)) || - process->procExeDeleted) { - - const char* deletedMarker = " (deleted)"; - const size_t markerLen = strlen(deletedMarker); - const size_t filenameLen = strlen(filename); - - if (filenameLen > markerLen) { - bool oldExeDeleted = process->procExeDeleted; - - process->procExeDeleted = String_eq(filename + filenameLen - markerLen, deletedMarker); - - if (process->procExeDeleted) - filename[filenameLen - markerLen] = '\0'; - - if (oldExeDeleted != process->procExeDeleted) - process->mergedCommand.lastUpdate = 0; - } - - Process_updateExe(process, filename); - } - } else if (process->procExe) { - Process_updateExe(process, NULL); - process->procExeDeleted = false; - } - - return true; -} - -static char* LinuxProcessList_updateTtyDevice(TtyDriver* ttyDrivers, unsigned long int tty_nr) { - unsigned int maj = major(tty_nr); - unsigned int min = minor(tty_nr); - - int i = -1; - for (;;) { - i++; - if ((!ttyDrivers[i].path) || maj < ttyDrivers[i].major) { - break; - } - if (maj > ttyDrivers[i].major) { - continue; - } - if (min < ttyDrivers[i].minorFrom) { - break; - } - if (min > ttyDrivers[i].minorTo) { - continue; - } - unsigned int idx = min - ttyDrivers[i].minorFrom; - struct stat sstat; - char* fullPath; - for (;;) { - xAsprintf(&fullPath, "%s/%d", ttyDrivers[i].path, idx); - int err = stat(fullPath, &sstat); - if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) { - return fullPath; - } - free(fullPath); - - xAsprintf(&fullPath, "%s%d", ttyDrivers[i].path, idx); - err = stat(fullPath, &sstat); - if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) { - return fullPath; - } - free(fullPath); - - if (idx == min) { - break; - } - - idx = min; - } - int err = stat(ttyDrivers[i].path, &sstat); - if (err == 0 && tty_nr == sstat.st_rdev) { - return xStrdup(ttyDrivers[i].path); - } - } - char* out; - xAsprintf(&out, "/dev/%u:%u", maj, min); - return out; -} - -static bool isOlderThan(const Process* proc, unsigned int seconds) { - const Machine* host = proc->super.host; - - assert(host->realtimeMs > 0); - - /* Starttime might not yet be parsed */ - if (proc->starttime_ctime <= 0) - return false; - - uint64_t realtime = host->realtimeMs / 1000; - - if (realtime < (uint64_t)proc->starttime_ctime) - return false; - - return realtime - proc->starttime_ctime > seconds; -} - -static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, openat_arg_t parentFd, const LinuxMachine* lhost, const char* dirname, const Process* parent) { - ProcessList* pl = (ProcessList*) this; - const Machine* host = &lhost->super; - const Settings* settings = host->settings; - const ScreenSettings* ss = settings->ss; - const struct dirent* entry; - - /* set runningTasks from /proc/stat (from Machine_scanCPUTime) */ - pl->runningTasks = lhost->runningTasks; - -#ifdef HAVE_OPENAT - int dirFd = openat(parentFd, dirname, O_RDONLY | O_DIRECTORY | O_NOFOLLOW); - if (dirFd < 0) - return false; - DIR* dir = fdopendir(dirFd); -#else - char dirFd[4096]; - xSnprintf(dirFd, sizeof(dirFd), "%s/%s", parentFd, dirname); - DIR* dir = opendir(dirFd); -#endif - if (!dir) { - Compat_openatArgClose(dirFd); - return false; - } - - const bool hideKernelThreads = settings->hideKernelThreads; - const bool hideUserlandThreads = settings->hideUserlandThreads; - const bool hideRunningInContainer = settings->hideRunningInContainer; - while ((entry = readdir(dir)) != NULL) { - const char* name = entry->d_name; - - // Ignore all non-directories - if (entry->d_type != DT_DIR && entry->d_type != DT_UNKNOWN) { - continue; - } - - // The RedHat kernel hides threads with a dot. - // I believe this is non-standard. - if (name[0] == '.') { - name++; - } - - // Just skip all non-number directories. - if (name[0] < '0' || name[0] > '9') { - continue; - } - - // filename is a number: process directory - int pid; - { - char* endptr; - unsigned long parsedPid = strtoul(name, &endptr, 10); - if (parsedPid == 0 || parsedPid == ULONG_MAX || *endptr != '\0') - continue; - pid = parsedPid; - } - - // Skip task directory of main thread - if (parent && pid == Process_getPid(parent)) - continue; - -#ifdef HAVE_OPENAT - int procFd = openat(dirFd, entry->d_name, O_RDONLY | O_DIRECTORY | O_NOFOLLOW); - if (procFd < 0) - continue; -#else - char procFd[4096]; - xSnprintf(procFd, sizeof(procFd), "%s/%s", dirFd, entry->d_name); -#endif - - bool preExisting; - Process* proc = ProcessList_getProcess(pl, pid, &preExisting, LinuxProcess_new); - LinuxProcess* lp = (LinuxProcess*) proc; - - Process_setThreadGroup(proc, parent ? Process_getPid(parent) : pid); - proc->isUserlandThread = Process_getPid(proc) != Process_getThreadGroup(proc); - - LinuxProcessList_recurseProcTree(this, procFd, lhost, "task", proc); - - /* - * These conditions will not trigger on first occurrence, cause we need to - * add the process to the ProcessList and do all one time scans - * (e.g. parsing the cmdline to detect a kernel thread) - * But it will short-circuit subsequent scans. - */ - if (preExisting && hideKernelThreads && Process_isKernelThread(proc)) { - proc->super.updated = true; - proc->super.show = false; - pl->kernelThreads++; - pl->totalTasks++; - Compat_openatArgClose(procFd); - continue; - } - if (preExisting && hideUserlandThreads && Process_isUserlandThread(proc)) { - proc->super.updated = true; - proc->super.show = false; - pl->userlandThreads++; - pl->totalTasks++; - Compat_openatArgClose(procFd); - continue; - } - if (preExisting && hideRunningInContainer && proc->isRunningInContainer) { - proc->super.updated = true; - proc->super.show = false; - Compat_openatArgClose(procFd); - continue; - } - - bool scanMainThread = !hideUserlandThreads && !Process_isKernelThread(proc) && !parent; - if (ss->flags & PROCESS_FLAG_IO) - LinuxProcessList_readIoFile(lp, procFd, scanMainThread); - - if (!LinuxProcessList_readStatmFile(lp, procFd, lhost)) - goto errorReadingProcess; - - { - bool prev = proc->usesDeletedLib; - - if (!proc->isKernelThread && !proc->isUserlandThread && - ((ss->flags & PROCESS_FLAG_LINUX_LRS_FIX) || (settings->highlightDeletedExe && !proc->procExeDeleted && isOlderThan(proc, 10)))) { - - // Check if we really should recalculate the M_LRS value for this process - uint64_t passedTimeInMs = host->realtimeMs - lp->last_mlrs_calctime; - - uint64_t recheck = ((uint64_t)rand()) % 2048; - - if (passedTimeInMs > recheck) { - lp->last_mlrs_calctime = host->realtimeMs; - LinuxProcessList_readMaps(lp, procFd, lhost, ss->flags & PROCESS_FLAG_LINUX_LRS_FIX, settings->highlightDeletedExe); - } - } else { - /* Copy from process structure in threads and reset if setting got disabled */ - proc->usesDeletedLib = (proc->isUserlandThread && parent) ? parent->usesDeletedLib : false; - lp->m_lrs = (proc->isUserlandThread && parent) ? ((const LinuxProcess*)parent)->m_lrs : 0; - } - - if (prev != proc->usesDeletedLib) - proc->mergedCommand.lastUpdate = 0; - } - - if ((ss->flags & PROCESS_FLAG_LINUX_SMAPS) && !Process_isKernelThread(proc)) { - if (!parent) { - // Read smaps file of each process only every second pass to improve performance - static int smaps_flag = 0; - if ((pid & 1) == smaps_flag) { - LinuxProcessList_readSmapsFile(lp, procFd, this->haveSmapsRollup); - } - if (pid == 1) { - smaps_flag = !smaps_flag; - } - } else { - lp->m_pss = ((const LinuxProcess*)parent)->m_pss; - } - } - - char statCommand[MAX_NAME + 1]; - unsigned long long int lasttimes = (lp->utime + lp->stime); - unsigned long int tty_nr = proc->tty_nr; - if (!LinuxProcessList_readStatFile(lp, procFd, lhost, scanMainThread, statCommand, sizeof(statCommand))) - goto errorReadingProcess; - - if (lp->flags & PF_KTHREAD) { - proc->isKernelThread = true; - } - - if (tty_nr != proc->tty_nr && this->ttyDrivers) { - free(proc->tty_name); - proc->tty_name = LinuxProcessList_updateTtyDevice(this->ttyDrivers, proc->tty_nr); - } - - if (ss->flags & PROCESS_FLAG_LINUX_IOPRIO) { - LinuxProcess_updateIOPriority(proc); - } - - proc->percent_cpu = NAN; - /* lhost->period might be 0 after system sleep */ - if (lhost->period > 0.0) { - float percent_cpu = saturatingSub(lp->utime + lp->stime, lasttimes) / lhost->period * 100.0; - proc->percent_cpu = MINIMUM(percent_cpu, host->activeCPUs * 100.0F); - } - proc->percent_mem = proc->m_resident / (double)(host->totalMem) * 100.0; - Process_updateCPUFieldWidths(proc->percent_cpu); - - if (! LinuxProcessList_updateUser(host, proc, procFd)) - goto errorReadingProcess; - - if (!LinuxProcessList_readStatusFile(proc, procFd)) - goto errorReadingProcess; - - if (!preExisting) { - - #ifdef HAVE_OPENVZ - if (ss->flags & PROCESS_FLAG_LINUX_OPENVZ) { - LinuxProcessList_readOpenVZData(lp, procFd); - } - #endif - - if (proc->isKernelThread) { - Process_updateCmdline(proc, NULL, 0, 0); - } else if (!LinuxProcessList_readCmdlineFile(proc, procFd)) { - Process_updateCmdline(proc, statCommand, 0, strlen(statCommand)); - } - - Process_fillStarttimeBuffer(proc); - - ProcessList_add(pl, proc); - } else { - if (settings->updateProcessNames && proc->state != ZOMBIE) { - if (proc->isKernelThread) { - Process_updateCmdline(proc, NULL, 0, 0); - } else if (!LinuxProcessList_readCmdlineFile(proc, procFd)) { - Process_updateCmdline(proc, statCommand, 0, strlen(statCommand)); - } - } - } - - if (ss->flags & PROCESS_FLAG_LINUX_CGROUP) - LinuxProcessList_readCGroupFile(lp, procFd); - - #ifdef HAVE_DELAYACCT - if (ss->flags & PROCESS_FLAG_LINUX_DELAYACCT) { - LinuxProcessList_readDelayAcctData(this, lp); - } - #endif - - if (ss->flags & PROCESS_FLAG_LINUX_OOM) { - LinuxProcessList_readOomData(lp, procFd); - } - - if (ss->flags & PROCESS_FLAG_LINUX_SECATTR) { - LinuxProcessList_readSecattrData(lp, procFd); - } - - if (ss->flags & PROCESS_FLAG_CWD) { - LinuxProcessList_readCwd(lp, procFd); - } - - if ((ss->flags & PROCESS_FLAG_LINUX_AUTOGROUP) && this->haveAutogroup) { - LinuxProcessList_readAutogroup(lp, procFd); - } - - #ifdef SCHEDULER_SUPPORT - if (ss->flags & PROCESS_FLAG_SCHEDPOL) { - Scheduling_readProcessPolicy(proc); - } - #endif - - if (!proc->cmdline && statCommand[0] && - (proc->state == ZOMBIE || Process_isKernelThread(proc) || settings->showThreadNames)) { - Process_updateCmdline(proc, statCommand, 0, strlen(statCommand)); - } - - /* - * Final section after all data has been gathered - */ - - proc->super.updated = true; - Compat_openatArgClose(procFd); - - if (hideRunningInContainer && proc->isRunningInContainer) { - proc->super.show = false; - continue; - } - - if (Process_isKernelThread(proc)) { - pl->kernelThreads++; - } else if (Process_isUserlandThread(proc)) { - pl->userlandThreads++; - } - - /* Set at the end when we know if a new entry is a thread */ - proc->super.show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc))); - - pl->totalTasks++; - /* runningTasks is set in Machine_scanCPUTime() from /proc/stat */ - continue; - - // Exception handler. - -errorReadingProcess: - { -#ifdef HAVE_OPENAT - if (procFd >= 0) - close(procFd); -#endif - - if (preExisting) { - /* - * The only real reason for coming here (apart from Linux violating the /proc API) - * would be the process going away with its /proc files disappearing (!HAVE_OPENAT). - * However, we want to keep in the process list for now for the "highlight dying" mode. - */ - } else { - /* A really short-lived process that we don't have full info about */ - Process_delete((Object*)proc); - } - } - } - closedir(dir); - return true; -} - -void ProcessList_goThroughEntries(ProcessList* super) { - LinuxProcessList* this = (LinuxProcessList*) super; - const Machine* host = super->super.host; - const Settings* settings = host->settings; - const LinuxMachine* lhost = (const LinuxMachine*) host; - - if (settings->ss->flags & PROCESS_FLAG_LINUX_AUTOGROUP) { - // Refer to sched(7) 'autogroup feature' section - // The kernel feature can be enabled/disabled through procfs at - // any time, so check for it at the start of each sample - only - // read from per-process procfs files if it's globally enabled. - this->haveAutogroup = LinuxProcess_isAutogroupEnabled(); - } else { - this->haveAutogroup = false; - } - - /* PROCDIR is an absolute path */ - assert(PROCDIR[0] == '/'); -#ifdef HAVE_OPENAT - openat_arg_t rootFd = AT_FDCWD; -#else - openat_arg_t rootFd = ""; -#endif - - LinuxProcessList_recurseProcTree(this, rootFd, lhost, PROCDIR, NULL); -} -- cgit v1.2.3