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-rw-r--r--src/ps/global.c651
1 files changed, 651 insertions, 0 deletions
diff --git a/src/ps/global.c b/src/ps/global.c
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index 0000000..cc4fa24
--- /dev/null
+++ b/src/ps/global.c
@@ -0,0 +1,651 @@
+/*
+ * global.c - generic ps symbols and functions
+ *
+ * Copyright © 2011-2023 Jim Warner <james.warner@comcast.net
+ * Copyright © 2004-2023 Craig Small <csmall@dropbear.xyz>
+ * Copyright © 1998-2002 Albert Cahalan
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <fcntl.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+#include <stdbool.h>
+
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+
+#include "c.h"
+#include "xalloc.h"
+
+#include "common.h"
+
+#ifndef __GNU_LIBRARY__
+#define __GNU_LIBRARY__ -1
+#endif
+#ifndef __GLIBC__
+#define __GLIBC__ -1
+#endif
+#ifndef __GLIBC_MINOR__
+#define __GLIBC_MINOR__ -1
+#endif
+
+// --- <pids> interface begin ||||||||||||||||||||||||||||||||||||||||||||
+// -----------------------------------------------------------------------
+struct pids_info *Pids_info = NULL; // our required <pids> context
+enum pids_item *Pids_items; // allocated as PIDSITEMS
+int Pids_index; // actual number of active enums
+
+// most of these could be defined as static in the output.c module
+// (but for future flexibility, the easiest route has been chosen)
+makREL(ADDR_CODE_END)
+makREL(ADDR_CODE_START)
+makREL(ADDR_CURR_EIP)
+makREL(ADDR_CURR_ESP)
+makREL(ADDR_STACK_START)
+makREL(AUTOGRP_ID)
+makREL(AUTOGRP_NICE)
+makREL(CGNAME)
+makREL(CGROUP)
+makREL(CMD)
+makREL(CMDLINE)
+makREL(ENVIRON)
+makREL(EXE)
+makREL(FLAGS)
+makREL(FLT_MAJ)
+makREL(FLT_MAJ_C)
+makREL(FLT_MIN)
+makREL(FLT_MIN_C)
+makREL(ID_EGID)
+makREL(ID_EGROUP)
+makREL(ID_EUID)
+makREL(ID_EUSER)
+makREL(ID_FGID)
+makREL(ID_FGROUP)
+makREL(ID_FUID)
+makREL(ID_FUSER)
+makREL(ID_LOGIN)
+makREL(ID_PGRP)
+makREL(ID_PID)
+makREL(ID_PPID)
+makREL(ID_RGID)
+makREL(ID_RGROUP)
+makREL(ID_RUID)
+makREL(ID_RUSER)
+makREL(ID_SESSION)
+makREL(ID_SGID)
+makREL(ID_SGROUP)
+makREL(ID_SUID)
+makREL(ID_SUSER)
+makREL(ID_TGID)
+makREL(ID_TPGID)
+makREL(IO_READ_BYTES)
+makREL(IO_READ_CHARS)
+makREL(IO_READ_OPS)
+makREL(IO_WRITE_BYTES)
+makREL(IO_WRITE_CBYTES)
+makREL(IO_WRITE_CHARS)
+makREL(IO_WRITE_OPS)
+makREL(LXCNAME)
+makREL(NICE)
+makREL(NLWP)
+makREL(NS_CGROUP)
+makREL(NS_IPC)
+makREL(NS_MNT)
+makREL(NS_NET)
+makREL(NS_PID)
+makREL(NS_TIME)
+makREL(NS_USER)
+makREL(NS_UTS)
+makREL(OOM_ADJ)
+makREL(OOM_SCORE)
+makREL(PRIORITY)
+makREL(PRIORITY_RT)
+makREL(PROCESSOR)
+makREL(PROCESSOR_NODE)
+makREL(RSS)
+makREL(RSS_RLIM)
+makREL(SCHED_CLASS)
+makREL(SD_MACH)
+makREL(SD_OUID)
+makREL(SD_SEAT)
+makREL(SD_SESS)
+makREL(SD_SLICE)
+makREL(SD_UNIT)
+makREL(SD_UUNIT)
+makREL(SIGBLOCKED)
+makREL(SIGCATCH)
+makREL(SIGIGNORE)
+makREL(SIGNALS)
+makREL(SIGPENDING)
+makREL(SMAP_PRV_TOTAL)
+makREL(SMAP_PSS)
+makREL(STATE)
+makREL(SUPGIDS)
+makREL(SUPGROUPS)
+makREL(TICS_ALL)
+makREL(TICS_ALL_C)
+makREL(TIME_ALL)
+makREL(TIME_ELAPSED)
+makREL(TICS_BEGAN)
+makREL(TTY)
+makREL(TTY_NAME)
+makREL(TTY_NUMBER)
+makREL(UTILIZATION)
+makREL(UTILIZATION_C)
+makREL(VM_DATA)
+makREL(VM_RSS_LOCKED)
+makREL(VM_RSS)
+makREL(VM_SIZE)
+makREL(VM_STACK)
+makREL(VSIZE_BYTES)
+makREL(WCHAN_NAME)
+makREL(extra)
+makREL(noop)
+// -----------------------------------------------------------------------
+// --- <pids> interface end ||||||||||||||||||||||||||||||||||||||||||||||
+
+
+static const char * saved_personality_text = "You found a bug!";
+
+int all_processes = -1;
+const char *bsd_j_format = (const char *)0xdeadbeef;
+const char *bsd_l_format = (const char *)0xdeadbeef;
+const char *bsd_s_format = (const char *)0xdeadbeef;
+const char *bsd_u_format = (const char *)0xdeadbeef;
+const char *bsd_v_format = (const char *)0xdeadbeef;
+int bsd_c_option = -1;
+int bsd_e_option = -1;
+unsigned cached_euid = 0xffffffff;
+int cached_tty = -1;
+char forest_prefix[4 * 32*1024 + 100]; // FIXME
+int forest_type = -1;
+unsigned format_flags = 0xffffffff; /* -l -f l u s -j... */
+format_node *format_list = (format_node *)0xdeadbeef; /* digested formatting options */
+unsigned format_modifiers = 0xffffffff; /* -c -j -y -P -L... */
+int header_gap = -1;
+int header_type = -1;
+int include_dead_children = -1;
+int lines_to_next_header = -1;
+char *lstart_format = NULL;
+int negate_selection = -1;
+int running_only = -1;
+int page_size = -1; // "int" for math reasons?
+unsigned personality = 0xffffffff;
+int prefer_bsd_defaults = -1;
+int screen_cols = -1;
+int screen_rows = -1;
+selection_node *selection_list = (selection_node *)0xdeadbeef;
+unsigned simple_select = 0xffffffff;
+sort_node *sort_list = (sort_node *)0xdeadbeef; /* ready-to-use sort list */
+const char *sysv_f_format = (const char *)0xdeadbeef;
+const char *sysv_fl_format = (const char *)0xdeadbeef;
+const char *sysv_j_format = (const char *)0xdeadbeef;
+const char *sysv_l_format = (const char *)0xdeadbeef;
+unsigned thread_flags = 0xffffffff;
+int unix_f_option = -1;
+int user_is_number = -1;
+int wchan_is_number = -1;
+const char *the_word_help;
+bool signal_names = FALSE;
+
+static void reset_selection_list(void){
+ selection_node *old;
+ selection_node *walk = selection_list;
+ if(selection_list == (selection_node *)0xdeadbeef){
+ selection_list = NULL;
+ return;
+ }
+ while(walk){
+ old = walk;
+ walk = old->next;
+ free(old->u);
+ free(old);
+ }
+ selection_list = NULL;
+}
+
+// The rules:
+// 1. Defaults are implementation-specific. (ioctl,termcap,guess)
+// 2. COLUMNS and LINES override the defaults. (standards compliance)
+// 3. Command line options override everything else.
+// 4. Actual output may be more if the above is too narrow.
+//
+// SysV tends to spew semi-wide output in all cases. The args
+// will be limited to 64 or 80 characters, without regard to
+// screen size. So lines of 120 to 160 chars are normal.
+// Tough luck if you want more or less than that! HP-UX has a
+// new "-x" option for 1024-char args in place of comm that
+// we'll implement at some point.
+//
+// BSD tends to make a good effort, then fall back to 80 cols.
+// Use "ww" to get infinity. This is nicer for "ps | less"
+// and "watch ps". It can run faster too.
+static void set_screen_size(void){
+ struct winsize ws;
+ char *columns; /* Unix98 environment variable */
+ char *lines; /* Unix98 environment variable */
+
+ do{
+ int fd;
+ if(ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 && ws.ws_col>0 && ws.ws_row>0) break;
+ if(ioctl(STDERR_FILENO, TIOCGWINSZ, &ws) != -1 && ws.ws_col>0 && ws.ws_row>0) break;
+ if(ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) != -1 && ws.ws_col>0 && ws.ws_row>0) break;
+ fd = open("/dev/tty", O_NOCTTY|O_NONBLOCK|O_RDONLY);
+ if(fd != -1){
+ int ret = ioctl(fd, TIOCGWINSZ, &ws);
+ close(fd);
+ if(ret != -1 && ws.ws_col>0 && ws.ws_row>0) break;
+ }
+ // TODO: ought to do tgetnum("co") and tgetnum("li") here
+ ws.ws_col = 80;
+ ws.ws_row = 24;
+ }while(0);
+ screen_cols = ws.ws_col; // hmmm, NetBSD subtracts 1
+ screen_rows = ws.ws_row;
+
+ // TODO: delete this line
+ if(!isatty(STDOUT_FILENO)) screen_cols = OUTBUF_SIZE;
+
+ columns = getenv("COLUMNS");
+ if(columns && *columns){
+ long t;
+ char *endptr;
+ t = strtol(columns, &endptr, 0);
+ if(!*endptr && (t>0) && (t<(long)OUTBUF_SIZE)) screen_cols = (int)t;
+ }
+
+ lines = getenv("LINES");
+ if(lines && *lines){
+ long t;
+ char *endptr;
+ t = strtol(lines, &endptr, 0);
+ if(!*endptr && (t>0) && (t<(long)OUTBUF_SIZE)) screen_rows = (int)t;
+ }
+
+ if((screen_cols<9) || (screen_rows<2))
+ fprintf(stderr,_("your %dx%d screen size is bogus. expect trouble\n"),
+ screen_cols, screen_rows
+ );
+}
+
+/**************** personality control **************/
+
+typedef struct personality_table_struct {
+ const char *name; /* personality name */
+ const void *jump; /* See gcc extension info. :-) */
+} personality_table_struct;
+
+static int compare_personality_table_structs(const void *a, const void *b){
+ return strcasecmp(((const personality_table_struct*)a)->name,((const personality_table_struct*)b)->name);
+}
+
+static const char *set_personality(void){
+ const char *s;
+ size_t sl;
+ char buf[16];
+ personality_table_struct findme = { buf, NULL};
+ personality_table_struct *found;
+ static const personality_table_struct personality_table[] = {
+ {"390", &&case_390},
+ {"aix", &&case_aix},
+ {"bsd", &&case_bsd},
+ {"compaq", &&case_compaq},
+ {"debian", &&case_debian},
+ {"default", &&case_default},
+ {"digital", &&case_digital},
+ {"gnu", &&case_gnu},
+ {"hp", &&case_hp},
+ {"hpux", &&case_hpux},
+ {"irix", &&case_irix},
+ {"linux", &&case_linux},
+ {"old", &&case_old},
+ {"os390", &&case_os390},
+ {"posix", &&case_posix},
+ {"s390", &&case_s390},
+ {"sco", &&case_sco},
+ {"sgi", &&case_sgi},
+ {"solaris2", &&case_solaris2},
+ {"sunos4", &&case_sunos4},
+ {"svr4", &&case_svr4},
+ {"sysv", &&case_sysv},
+ {"tru64", &&case_tru64},
+ {"unix", &&case_unix},
+ {"unix95", &&case_unix95},
+ {"unix98", &&case_unix98},
+ {"unknown", &&case_unknown}
+ };
+ const int personality_table_count = sizeof(personality_table)/sizeof(personality_table_struct);
+
+ personality = 0;
+ prefer_bsd_defaults = 0;
+
+ bsd_j_format = "OL_j";
+ bsd_l_format = "OL_l";
+ bsd_s_format = "OL_s";
+ bsd_u_format = "OL_u";
+ bsd_v_format = "OL_v";
+
+ /* When these are NULL, the code does SysV output modifier logic */
+ sysv_f_format = NULL;
+ sysv_fl_format = NULL;
+ sysv_j_format = NULL;
+ sysv_l_format = NULL;
+
+ s = getenv("PS_PERSONALITY");
+ if(!s || !*s) s = getenv("CMD_ENV");
+ if(!s || !*s) s="unknown"; /* "Do The Right Thing[tm]" */
+ if(getenv("I_WANT_A_BROKEN_PS")) s="old";
+ sl = strlen(s);
+ if(sl > 15) return _("environment specified an unknown personality");
+ strncpy(buf, s, sl);
+ buf[sl] = '\0';
+ if ((saved_personality_text = strdup(buf))==NULL) {
+ fprintf(stderr, _("cannot strdup() personality text\n"));
+ exit(EXIT_FAILURE);
+ }
+
+ found = bsearch(&findme, personality_table, personality_table_count,
+ sizeof(personality_table_struct), compare_personality_table_structs
+ );
+
+ if(!found) return _("environment specified an unknown personality");
+
+ goto *(found->jump); /* See gcc extension info. :-) */
+
+ case_bsd:
+ personality = PER_FORCE_BSD | PER_BSD_h | PER_BSD_m;
+ prefer_bsd_defaults = 1;
+ bsd_j_format = "FB_j";
+ bsd_l_format = "FB_l";
+ /* bsd_s_format not used */
+ bsd_u_format = "FB_u";
+ bsd_v_format = "FB_v";
+ return NULL;
+
+ case_old:
+ personality = PER_FORCE_BSD | PER_OLD_m;
+ prefer_bsd_defaults = 1;
+ return NULL;
+
+ case_debian: /* Toss this? They don't seem to care much. */
+ case_gnu:
+ personality = PER_GOOD_o | PER_OLD_m;
+ prefer_bsd_defaults = 1;
+ sysv_f_format = "RD_f";
+ /* sysv_fl_format = "RD_fl"; */ /* old Debian ps can't do this! */
+ sysv_j_format = "RD_j";
+ sysv_l_format = "RD_l";
+ return NULL;
+
+ case_linux:
+ personality = PER_GOOD_o | PER_ZAP_ADDR | PER_SANE_USER;
+ return NULL;
+
+ case_default: /* use defaults for ps, ignoring other environment variables */
+ case_unknown: /* defaults, but also check inferior environment variables */
+ return NULL;
+
+ case_aix:
+ bsd_j_format = "FB_j";
+ bsd_l_format = "FB_l";
+ /* bsd_s_format not used */
+ bsd_u_format = "FB_u";
+ bsd_v_format = "FB_v";
+ return NULL;
+
+ case_tru64:
+ case_compaq:
+ case_digital:
+ // no PER_NO_DEFAULT_g even though man page claims it
+ // Reality: the g is a NOP
+ personality = PER_GOOD_o | PER_BSD_h;
+ prefer_bsd_defaults = 1;
+ sysv_f_format = "F5FMT";
+ sysv_fl_format = "FL5FMT";
+ sysv_j_format = "JFMT";
+ sysv_l_format = "L5FMT";
+ bsd_j_format = "JFMT";
+ bsd_l_format = "LFMT";
+ bsd_s_format = "SFMT";
+ bsd_u_format = "UFMT";
+ bsd_v_format = "VFMT";
+ return NULL;
+
+ case_sunos4:
+ personality = PER_NO_DEFAULT_g;
+ prefer_bsd_defaults = 1;
+ bsd_j_format = "FB_j";
+ bsd_l_format = "FB_l";
+ /* bsd_s_format not used */
+ bsd_u_format = "FB_u";
+ bsd_v_format = "FB_v";
+ return NULL;
+
+ case_irix:
+ case_sgi:
+ s = getenv("_XPG");
+ if(s && s[0]>'0' && s[0]<='9')
+ return NULL;
+ personality = PER_IRIX_l;
+ return NULL;
+
+ case_os390: /* IBM's OS/390 OpenEdition on the S/390 mainframe */
+ case_s390:
+ case_390:
+ sysv_j_format = "J390"; /* don't know what -jl and -jf do */
+ return NULL;
+
+ case_hp:
+ case_hpux:
+ personality = PER_HPUX_x;
+ return NULL;
+
+ case_svr4:
+ case_sysv:
+ case_sco:
+ personality = PER_SVR4_x;
+ return NULL;
+
+ case_posix:
+ case_solaris2:
+ case_unix95:
+ case_unix98:
+ case_unix:
+ return NULL;
+}
+
+
+/************ Call this to reinitialize everything ***************/
+void reset_global(void){
+ proc_t *p;
+ int i;
+
+ reset_selection_list();
+
+// --- <pids> interface --------------------------------------------------
+ if (!Pids_items)
+ Pids_items = xcalloc(PIDSITEMS, sizeof(enum pids_item));
+
+ for (i = 0; i < PIDSITEMS; i++)
+ Pids_items[i] = PIDS_noop;
+
+ if (!Pids_info) {
+ if (procps_pids_new(&Pids_info, Pids_items, i)) {
+ fprintf(stderr, _("fatal library error, context\n"));
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ Pids_items[0] = PIDS_TTY;
+ procps_pids_reset(Pids_info, Pids_items, 1);
+ if (!(p = fatal_proc_unmounted(Pids_info, 1))) {
+ fprintf(stderr, _("fatal library error, lookup self\n"));
+ exit(EXIT_FAILURE);
+ }
+// --- <pids> interface --------------------------------------------------
+
+ set_screen_size();
+ set_personality();
+
+ all_processes = 0;
+ bsd_c_option = 0;
+ bsd_e_option = 0;
+ cached_euid = geteuid();
+ cached_tty = PIDS_VAL(0, s_int, p, Pids_info);
+/* forest_prefix must be all zero because of POSIX */
+ forest_type = 0;
+ format_flags = 0; /* -l -f l u s -j... */
+ format_list = NULL; /* digested formatting options */
+ format_modifiers = 0; /* -c -j -y -P -L... */
+ header_gap = -1; /* send lines_to_next_header to -infinity */
+ header_type = HEAD_SINGLE;
+ include_dead_children = 0;
+ lines_to_next_header = 1;
+ negate_selection = 0;
+ page_size = getpagesize();
+ running_only = 0;
+ selection_list = NULL;
+ simple_select = 0;
+ sort_list = NULL;
+ thread_flags = 0;
+ unix_f_option = 0;
+ user_is_number = 0;
+ wchan_is_number = 0;
+/* Translation Note:
+ . The following translatable word will be used to recognize the
+ . user's request for help text. In other words, the translation
+ . you provide will alter program behavior.
+ .
+ . It must be limited to 15 characters or less.
+ */
+ the_word_help = _("help");
+}
+
+static const char archdefs[] =
+#ifdef __alpha__
+" alpha"
+#endif
+#ifdef __arm__
+" arm"
+#endif
+#ifdef __hppa__
+" hppa"
+#endif
+#ifdef __i386__
+" i386"
+#endif
+#ifdef __ia64__
+" ia64"
+#endif
+#ifdef __mc68000__
+" mc68000"
+#endif
+#ifdef __mips64__
+" mips64"
+#endif
+#ifdef __mips__
+" mips"
+#endif
+#ifdef __powerpc__
+" powerpc"
+#endif
+#ifdef __sh3__
+" sh3"
+#endif
+#ifdef __sh__
+" sh"
+#endif
+#ifdef __sparc__
+" sparc"
+#endif
+#ifdef __sparc_v9__
+" sparc_v9"
+#endif
+#ifdef __x86_64__
+" x86_64"
+#endif
+"";
+
+/*********** spew variables ***********/
+void self_info(void){
+ fprintf(stderr,
+ "BSD j %s\n"
+ "BSD l %s\n"
+ "BSD s %s\n"
+ "BSD u %s\n"
+ "BSD v %s\n"
+ "SysV -f %s\n"
+ "SysV -fl %s\n"
+ "SysV -j %s\n"
+ "SysV -l %s\n"
+ "\n",
+ bsd_j_format ? bsd_j_format : "(none)",
+ bsd_l_format ? bsd_l_format : "(none)",
+ bsd_s_format ? bsd_s_format : "(none)",
+ bsd_u_format ? bsd_u_format : "(none)",
+ bsd_v_format ? bsd_v_format : "(none)",
+ sysv_f_format ? sysv_f_format : "(none)",
+ sysv_fl_format ? sysv_fl_format : "(none)",
+ sysv_j_format ? sysv_j_format : "(none)",
+ sysv_l_format ? sysv_l_format : "(none)"
+ );
+
+ fprintf(stderr, "%s version %s\n", PACKAGE_NAME, PACKAGE_VERSION);
+ /* __libc_print_version(); */ /* how can we get the run-time version? */
+ fprintf(stderr, "Compiled with: glibc %d.%d, gcc %d.%d\n\n",
+ __GLIBC__, __GLIBC_MINOR__, __GNUC__, __GNUC_MINOR__
+ );
+
+ fprintf(stderr,
+ "header_gap=%d lines_to_next_header=%d\n"
+ "screen_cols=%d screen_rows=%d\n"
+ "\n",
+ header_gap, lines_to_next_header,
+ screen_cols, screen_rows
+ );
+
+ fprintf(stderr,
+ "personality=0x%08x (from \"%s\")\n"
+ "EUID=%d TTY=%d,%d page_size=%d\n",
+ personality, saved_personality_text,
+ cached_euid, (int)major(cached_tty), (int)minor(cached_tty),
+ (int)(page_size)
+ );
+
+ fprintf(stderr,
+ "sizeof(proc_t)=%d sizeof(long)=%d sizeof(long)=%d\n",
+ (int)sizeof(proc_t), (int)sizeof(long), (int)sizeof(long)
+ );
+
+ fprintf(stderr, "archdefs:%s\n", archdefs);
+}
+
+void __attribute__ ((__noreturn__))
+catastrophic_failure(const char *filename,
+ unsigned int linenum,
+ const char *message)
+{
+ error_at_line(0, 0, filename, linenum, "%s", message);
+ exit(EXIT_FAILURE);
+}
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