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- /*
- * top - a top users display for Unix
- * NEXTSTEP v.0.5 11/26/1996 tpugh
- *
- * SYNOPSIS: any m68k or intel NEXTSTEP v3.x system
- *
- * DESCRIPTION:
- * This is the machine-dependent module for NEXTSTEP v3.x
- * Reported to work for NEXTSTEP v3.0, v3.2, and v3.3 Mach OS:
- * NEXTSTEP v3.0 on Motorola machines.
- * NEXTSTEP v3.2 on Intel and Motorola machines.
- * NEXTSTEP v3.3 on Intel and Motorola machines.
- * Problem with command column for: (Choose next33 for fix)
- * NEXTSTEP v3.2 on HP machines.
- * NEXTSTEP v3.3 on HP and Sparc machines.
- * Has not been tested for NEXTSTEP v2.x machines, although it should work.
- * Has not been tested for NEXTSTEP v3.1 machines, although it should work.
- * Install "top" with the permissions 4755.
- * hostname# chmod 4755 top
- * hostname# ls -lg top
- * -rwsr-xr-x 1 root kmem 121408 Sep 1 10:14 top*
- * With the kmem group sticky bit set, we can read kernal memory without problems,
- * but to communicate with the Mach kernal for task and thread info, it requires
- * root privileges. Therefore, "top" must be setuid 4755 with the owner as root.
- *
- * LIBS:
- *
- * Need the compiler flag, "-DSHOW_UTT", to see the user task and thread task
- * data structures to report process info.
- *
- * CFLAGS: -DSHOW_UTT
- *
- *
- * AUTHORS: Tim Pugh <tpugh@oce.orst.edu>
- */
-
- #include <sys/types.h>
- #include <sys/signal.h>
- #include <sys/param.h>
-
- #include <stdio.h>
- #include <nlist.h>
- #include <math.h>
- #include <sys/dir.h>
- #include <sys/user.h>
- #include <sys/proc.h>
- #include <sys/dk.h>
- #include <sys/vm.h>
- #include <sys/file.h>
- #include <sys/time.h>
- #import <mach/mach.h>
- #include <sys/vmmeter.h>
- #import <mach/vm_statistics.h>
-
- #include "top.h"
- #include "utils.h"
- #include "machine.h"
-
- #ifdef NEXTSTEP40
- #import "machine/m_next40_task.h"
- #else NEXTSTEP40
- #import "machine/m_next_task.h"
- #endif NEXTSTEP40
-
- /* Problems on NS/HPPA machines. Also, not currently used by source code.
- *#define DOSWAP
- */
-
- extern int errno, sys_nerr;
- extern char *sys_errlist[];
- #define strerror(e) (((e) >= 0 && (e) < sys_nerr) ? sys_errlist[(e)] : "Unknown error")
-
- #define VMUNIX "/mach"
- #define KMEM "/dev/kmem"
- #define MEM "/dev/mem"
- #ifdef DOSWAP
- #define SWAP "/dev/drum"
- #endif
-
- /* NeXT BSD process structure does not contain locations to hold info such as
- * cpu usage, memory usage, resident core memory, or cpu time data. So I've made
- * a new process structure which composites the NeXT structure and the missing
- * system info.
- */
- struct proc_unix {
- struct proc *p_self; /* Each p_self points to a element in pbase. */
- int p_pctcpu; /* Scaled percent cpu usage. */
- int p_vsize; /* Total VM memory usage. */
- int p_rsize; /* Resident core memory usage. */
- int p_cptime; /* scaled CPU Time */
- int run_state; /* Task run state. */
- int flags; /* Task state flags. */
- int nthreads; /* Number of threads per Task. */
- int cur_priority; /* Current main thread priority */
- };
-
- /* Contains the list of processes. */
- struct handle
- {
- struct proc_unix *list; /* points to list of valid proc pointer */
- int count; /* number of pointers */
- int current; /* Index of the current process formatting */
- };
-
- /* declarations for load_avg */
- #include "loadavg.h"
- #define LSCALE 1000 /* scaling for "fixed point" arithmetic - <sys/kernel.h> */
-
- /* define what weighted cpu is. */
- /*
- *#define weighted_cpu(pct, pp) ((pp)->p_time == 0 ? 0.0 : \
- * ((pct) / (1.0 - exp((pp)->p_time * logcpu))))
- */
-
- /* The following three variables are not defined in NeXT's process structure.
- * So they are zeroed until other ways of obtaining the info are found.
- */
- /* what we consider to be process size: */
- /* #define PROCSIZE(pp) ((pp)->p_tsize + (pp)->p_dsize + (pp)->p_ssize) */
- #define PROCSIZE(pp) (0)
-
- /* #define P_RSSIZE(pp) ((pp)->p_rssize) */
- #define P_RSSIZE(pp) (0)
-
- /* #define P_CPTICKS(pp) ((pp)->p_cpticks) */
- #define P_CPTICKS(pp) (0)
-
-
- extern int thread_stats(int p_pid, struct thread_basic_info *info, int *count);
- extern int mach_load_avg(void);
- extern kern_return_t task_stats(int p_pid, struct task_basic_info *info);
-
- /* definitions for indices in the nlist array */
- #define X_AVENRUN 0
- #define X_CCPU 1
- #define X_NPROC 2
- #define X_PROC 3
- #define X_TOTAL 4
- #define X_CP_TIME 5
- #define X_MPID 6
- #define X_HZ 7
-
- static struct nlist nlst[] = {
- { "_avenrun" }, /* 0 */
- { "_cpu_clk" }, /* 1 */
- { "_max_proc" }, /* 2 */
- { "_allproc" }, /* 3 */
- { "_total" }, /* 4 */
- { "_cp_time" }, /* 5 */
- { "_mpid" }, /* 6 */
- { "_hz" }, /* 7 */
- { 0 }
- };
-
- /*
- * These definitions control the format of the per-process area
- */
-
- static char header[] =
- " PID X STATE PRI NICE THR VSIZE RSIZE %MEM %CPU TIME COMMAND";
- /* static char header[] =
- * " PID X STATE PRI NICE THR VSIZE RSIZE %MEM %WCPU %CPU TIME COMMAND";
- */
-
- /* 0123456 -- field to fill in starts at header+6 */
- #define UNAME_START 6
-
- #define Proc_format \
- "%5d %-8.8s %-5s %3d %4d %4d %5s %5s %6.2f %6.2f %6s %.14s"
- /* #define Proc_format \
- * "%5d %-8.8s %-5s %3d %4d %4d %5s %5s %6.2f %6.2f %6.2f %6s %.14s"
- */
-
-
- /* process state names for the "STATE" column of the display */
- /* the extra nulls in the string "run" are for adding a slash and
- the processor number when needed */
- char *state_abbrev[] =
- {
- "", "sleep", "WAIT", "run\0\0\0", "start", "zomb", "stop"
- };
- char *mach_state[] =
- {
- "", "R", "T", "S", "U", "H"
- };
- char *flags_state[] =
- {
- "", "W", "I"
- };
-
- /* these are for detailing the process states */
- int process_states[7];
- /* char *procstatenames[] = {
- * "", " sleeping, ", " ABANDONED, ", " running, ", " starting, ",
- * " zombie, ", " stopped, ",
- * NULL
- *};
- */
- char *procstatenames[] = {
- "", " running, ", " stopped, ", " sleeping, ", " uninterruptable, ",
- " halted, ", " zombie ", NULL
- };
-
-
- static int kmem, mem;
- #ifdef DOSWAP
- static int swap;
- #endif
-
- /* values that we stash away in _init and use in later routines */
-
- /* static double logcpu; */
-
- /* these are retrieved from the kernel in _init */
-
- static unsigned long proc;
- static int nproc;
- static long hz;
- static load_avg ccpu;
- static int ncpu = 0;
-
- /* these are offsets obtained via nlist and used in the get_ functions */
-
- static unsigned long avenrun_offset;
- static unsigned long mpid_offset;
- static unsigned long total_offset;
- static unsigned long cp_time_offset;
-
- /* these are for calculating cpu state percentages */
-
- static long cp_time[CPUSTATES];
- static long cp_old[CPUSTATES];
- static long cp_diff[CPUSTATES];
-
- /* these are for detailing the cpu states */
-
- int cpu_states[4];
- char *cpustatenames[] = {
- "user", "nice", "system", "idle", NULL
- };
-
- /* these are for detailing the memory statistics */
- int memory_stats[7];
- /* char *memorynames[] = {
- * "Real: ", "K/", "K act/tot ", "Virtual: ", "K/",
- * "K act/tot ", "Free: ", "K", NULL
- * };
- */
- char *memorynames[] = {
- "K Tot, ", "K Act, ", "K Inact, ", "K Wired, ", "K Free, ", "K in, ", "K out ", NULL
- };
-
- /* these are for keeping track of the proc array */
- static int bytes;
- static int pref_count;
- static struct proc *pbase;
- static struct proc_unix *pref;
-
- /* these are for getting the memory statistics */
-
- static int pageshift; /* log base 2 of the pagesize */
-
- /* define pagetok in terms of pageshift */
- #define pagetok(size) ((size) << pageshift)
-
- /* useful externals */
- extern int errno;
- extern char *sys_errlist[];
-
- long lseek();
- long time();
-
- machine_init(struct statics *statics)
- {
- register int i = 0;
- register int pagesize;
-
- if ((kmem = open(KMEM, O_RDONLY)) == -1) {
- perror(KMEM);
- return(-1);
- }
- if ((mem = open(MEM, O_RDONLY)) == -1) {
- perror(MEM);
- return(-1);
- }
-
- #ifdef DOSWAP
- if ((swap = open(SWAP, O_RDONLY)) == -1) {
- perror(SWAP);
- return(-1);
- }
- #endif
-
- /* get the list of symbols we want to access in the kernel */
- (void) nlist(VMUNIX, nlst);
- if (nlst[0].n_type == 0)
- {
- fprintf(stderr, "top: nlist failed\n");
- return(-1);
- }
-
- /* make sure they were all found */
- if (i > 0 && check_nlist(nlst) > 0)
- {
- return(-1);
- }
-
- /* get the symbol values out of kmem */
- (void) getkval(nlst[X_PROC].n_value, (int *)(&proc), sizeof(proc),
- nlst[X_PROC].n_un.n_name);
- (void) getkval(nlst[X_NPROC].n_value, &nproc, sizeof(nproc),
- nlst[X_NPROC].n_un.n_name);
- (void) getkval(nlst[X_HZ].n_value, (int *)(&hz), sizeof(hz),
- nlst[X_HZ].n_un.n_name);
- /* (void) getkval(nlst[X_CCPU].n_value, (int *)(&ccpu), sizeof(ccpu),
- * nlst[X_CCPU].n_un.n_name);
- */
-
- /* stash away certain offsets for later use */
- mpid_offset = nlst[X_MPID].n_value;
- avenrun_offset = nlst[X_AVENRUN].n_value;
- total_offset = nlst[X_TOTAL].n_value;
- cp_time_offset = nlst[X_CP_TIME].n_value;
-
-
- /* this is used in calculating WCPU -- calculate it ahead of time */
- /* ccpu = mach_load_avg();
- * logcpu = log((double)(ccpu)/LOAD_SCALE);
- */
-
- /* allocate space for proc structure array and array of pointers */
- bytes = nproc * sizeof(struct proc);
- pbase = (struct proc *)malloc(bytes);
- pref = (struct proc_unix *)malloc((nproc+1) * sizeof(struct proc_unix *));
-
- /* Just in case ... */
- if (pbase == (struct proc *)NULL || pref == (struct proc_unix *)NULL)
- {
- fprintf(stderr, "top: can't allocate sufficient memory\n");
- return(-1);
- }
-
- /* get the page size with "getpagesize" and calculate pageshift from it */
- pagesize = getpagesize();
- pageshift = ceil(log(pagesize)/log(2.0));
-
- /* we only need the amount of log(2)1024 for our conversion */
- pageshift -= LOG1024;
-
- /* fill in the statics information */
- statics->procstate_names = procstatenames;
- statics->cpustate_names = cpustatenames;
- statics->memory_names = memorynames;
-
- /* all done! */
- return(0);
- }
-
- char *format_header(register char *uname_field)
- {
- register char *ptr;
-
- ptr = header + UNAME_START;
- while (*uname_field != '\0')
- {
- *ptr++ = *uname_field++;
- }
-
- return(header);
- }
-
- static int swappgsin = -1;
- static int swappgsout = -1;
- static vm_statistics_data_t vm_stats;
- static host_basic_info_data_t host_stats;
-
- get_system_info(struct system_info *si)
- {
- long avenrun[3];
- long total;
-
- /* get the cp_time array */
- (void) getkval(cp_time_offset, (int *)cp_time, sizeof(cp_time),
- "_cp_time");
-
- /* get load average array */
- (void) getkval(avenrun_offset, (int *)avenrun, sizeof(avenrun),
- "_avenrun");
-
- /* get mpid -- process id of last process */
- (void) getkval(mpid_offset, &(si->last_pid), sizeof(si->last_pid),
- "_mpid");
-
- /* convert load averages to doubles */
- {
- register int i;
- for(i=0; i<3; i++)
- si->load_avg[i] = ((double)avenrun[i])/LSCALE;
- }
-
- /* convert cp_time counts to percentages */
- total = percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff);
-
- /* sum memory statistics */
- {
- /* get total -- systemwide main memory usage structure */
- /* Does not work on NeXT system. Use vm_statistics() for paging info. */
- /* struct vmtotal total;
- * (void) getkval(total_offset, (int *)(&total), sizeof(total),
- * "_total");
- */
- /* convert memory stats to Kbytes */
- /* memory_stats[0] = -1;
- * memory_stats[1] = pagetok(total.t_arm);
- * memory_stats[2] = pagetok(total.t_rm);
- * memory_stats[3] = -1;
- * memory_stats[4] = pagetok(total.t_avm);
- * memory_stats[5] = pagetok(total.t_vm);
- * memory_stats[6] = -1;
- * memory_stats[7] = pagetok(total.t_free);
- */
- kern_return_t status;
- unsigned int count=HOST_BASIC_INFO_COUNT;
- status = vm_statistics(task_self(), &vm_stats);
- #ifdef DEBUG
- if(status != KERN_SUCCESS)
- mach_error("An error calling vm_statistics()!", status);
- #endif
- status = host_info(host_self(), HOST_BASIC_INFO, (host_info_t)&host_stats, &count);
- #ifdef DEBUG
- if(status != KERN_SUCCESS)
- mach_error("An error calling host_info()!", status);
- #endif
- /* convert memory stats to Kbytes */
- memory_stats[0] = pagetok(host_stats.memory_size / vm_stats.pagesize);
- memory_stats[1] = pagetok(vm_stats.active_count);
- memory_stats[2] = pagetok(vm_stats.inactive_count);
- memory_stats[3] = pagetok(vm_stats.wire_count);
- memory_stats[4] = pagetok(vm_stats.free_count);
- if (swappgsin < 0)
- {
- memory_stats[5] = 1;
- memory_stats[6] = 1;
- } else {
- memory_stats[5] = pagetok(((vm_stats.pageins - swappgsin)));
- memory_stats[6] = pagetok(((vm_stats.pageouts - swappgsout)));
- }
- swappgsin = vm_stats.pageins;
- swappgsout = vm_stats.pageouts;
- }
-
- /* set arrays and strings */
- si->cpustates = cpu_states;
- si->memory = memory_stats;
- }
-
- static struct handle handle;
-
- caddr_t get_process_info(struct system_info *si,
- struct process_select *sel,
- int (*compare)())
- {
- int i, j;
- int total_procs;
- int active_procs;
- struct proc *pp;
- struct task_basic_info taskInfo;
- struct thread_basic_info threadInfo;
- kern_return_t thread_status;
- kern_return_t task_status;
- int threadCount;
-
- /* these are copied out of sel for speed */
- int show_idle;
- int show_system;
- int show_uid;
- int show_command;
-
- /* get a pointer to the states summary array */
- si->procstates = process_states;
-
- /* set up flags which define what we are going to select */
- show_idle = sel->idle;
- show_system = sel->system;
- show_uid = sel->uid != -1;
- show_command = sel->command != NULL;
-
- (void) getkval(nlst[X_PROC].n_value, (int *)(&proc), sizeof(proc),
- nlst[X_PROC].n_un.n_name);
-
- /* count up process states and get pointers to interesting procs */
- total_procs = 0;
- active_procs = 0;
- memset((char *)process_states, 0, sizeof(process_states));
- i = 0;
- j = 0;
- do {
- if(i == 0) {
- /* read first proc structure */
- (void) getkval(proc, (int *)&pbase[i], sizeof(struct proc), "first proc");
- } else {
- (void) getkval(pp->p_nxt, (int *)&pbase[i], sizeof(struct proc), "nxt proc");
- }
- pp = &pbase[i];
-
- thread_status = thread_stats(pp->p_pid, &threadInfo, &threadCount);
- task_status = task_stats(pp->p_pid, &taskInfo);
- /*
- * Process slots that are actually in use have a non-zero
- * status field. Processes with SSYS set are system
- * processes---these get ignored unless show_sysprocs is set.
- */
- if (pp->p_stat != 0 &&
- (show_system || ((pp->p_flag & SSYS) == 0)))
- {
- total_procs++;
- /* Using thread info for process states. */
- /* process_states[pp->p_stat]++; */
- if(thread_status==KERN_SUCCESS)
- process_states[threadInfo.run_state]++;
- if ((pp->p_stat != SZOMB) &&
- (show_idle || (pp->p_stat == SRUN)) &&
- (!show_uid || pp->p_uid == (uid_t)sel->uid))
- {
- pref[j].p_self = pp;
- if(thread_status==KERN_SUCCESS)
- {
- pref[j].run_state = threadInfo.run_state;
- pref[j].flags = threadInfo.flags;
- pref[j].p_pctcpu = threadInfo.cpu_usage;
- pref[j].p_cptime = threadInfo.user_time.seconds +
- threadInfo.system_time.seconds;
- pref[j].cur_priority = threadInfo.cur_priority;
- pref[j].nthreads = threadCount;
- } else {
- pref[j].run_state = 0;
- pref[j].flags = 0;
- pref[j].p_pctcpu = 0;
- pref[j].p_cptime = 0;
- }
- /* Get processes memory usage and cputime */
- if(task_status==KERN_SUCCESS)
- {
- pref[j].p_rsize = taskInfo.resident_size/1024;
- pref[j].p_vsize = taskInfo.virtual_size/1024;
- } else {
- pref[j].p_rsize = 0;
- pref[j].p_vsize = 0;
- }
- active_procs++;
- j++;
- }
- }
- i++;
- } while(pp->p_nxt != 0);
- pref[j].p_self = NULL; /* End list of processes with NULL */
-
- /* if requested, sort the "interesting" processes */
- if (compare != NULL)
- {
- qsort((char *)pref, active_procs, sizeof(struct proc_unix), compare);
- }
-
- /* remember active and total counts */
- si->p_total = total_procs;
- si->p_active = pref_count = active_procs;
-
- /* pass back a handle */
- handle.list = pref;
- handle.count = active_procs;
- handle.current = 0;
- return((caddr_t)&handle);
- }
-
- char fmt[MAX_COLS]; /* static area where result is built */
-
- char *format_next_process(caddr_t handle, char *(*get_userid)())
- {
- register struct proc *pp;
- register long cputime;
- register double pct, wcpu, pctmem;
- int where;
- struct user u;
- struct handle *hp;
- register int p_pctcpu;
- register int rm_size;
- register int vm_size;
- register int run_state;
- register int flags;
- register int nthreads;
- register int cur_priority;
- char state_str[10];
-
- /* find and remember the next proc structure */
- hp = (struct handle *)handle;
- pp = hp->list[hp->current].p_self;
- p_pctcpu = hp->list[hp->current].p_pctcpu;
- cputime = hp->list[hp->current].p_cptime;
- rm_size = hp->list[hp->current].p_rsize;
- vm_size = hp->list[hp->current].p_vsize;
- run_state = hp->list[hp->current].run_state;
- flags = hp->list[hp->current].flags;
- nthreads = hp->list[hp->current].nthreads;
- cur_priority = hp->list[hp->current].cur_priority;
- hp->current++;
- hp->count--;
-
- /* get the process's user struct and set cputime */
- where = getu(pp, &u);
- if (where == -1)
- {
- (void) strcpy(u.u_comm, "<swapped>");
- cputime = 0;
- }
- else
- {
- /* set u_comm for system processes */
- if (u.u_comm[0] == '\0')
- {
- if (pp->p_pid == 0)
- {
- (void) strcpy(u.u_comm, "Swapper");
- }
- else if (pp->p_pid == 2)
- {
- (void) strcpy(u.u_comm, "Pager");
- }
- }
- if (where == 1) {
- /*
- * Print swapped processes as <pname>
- */
- char buf[sizeof(u.u_comm)];
- (void) strncpy(buf, u.u_comm, sizeof(u.u_comm));
- u.u_comm[0] = '<';
- (void) strncpy(&u.u_comm[1], buf, sizeof(u.u_comm) - 2);
- u.u_comm[sizeof(u.u_comm) - 2] = '\0';
- (void) strncat(u.u_comm, ">", sizeof(u.u_comm) - 1);
- u.u_comm[sizeof(u.u_comm) - 1] = '\0';
- }
- /* User structure does not work. Use Thread Info to get cputime for process. */
- /* cputime = u.u_ru.ru_utime.tv_sec + u.u_ru.ru_stime.tv_sec; */
- }
-
-
- /* calculate the base for cpu percentages */
- pct = (double)(p_pctcpu)/TH_USAGE_SCALE;
- /* wcpu = weighted_cpu(pct, pp);
- */
- pctmem = (double)(rm_size*1024.) / (double)(host_stats.memory_size);
-
- /* Get process state description */
- if(run_state)
- {
- strcpy(state_str, mach_state[run_state]);
- strcat(state_str, flags_state[flags]);
- } else {
- strcpy(state_str, state_abbrev[pp->p_stat]);
- }
-
- /* format this entry */
- sprintf(fmt,
- Proc_format,
- pp->p_pid,
- (*get_userid)(pp->p_uid),
- state_str,
- cur_priority,
- /* pp->p_pri - PZERO, */
- pp->p_nice - NZERO,
- nthreads,
- format_k(vm_size),
- format_k(rm_size),
- 100.0 * pctmem,
- /* 100.0 * wcpu, */
- 100.0 * pct,
- format_time(cputime),
- printable(u.u_comm));
-
- /* return the result */
- return(fmt);
- }
-
- /*
- * getu(p, u) - get the user structure for the process whose proc structure
- * is pointed to by p. The user structure is put in the buffer pointed
- * to by u. Return 0 if successful, -1 on failure (such as the process
- * being swapped out).
- */
-
- getu(register struct proc *p, struct user *u)
- {
- /* int i; */
- /* int uutask[40]; */
-
- register int nbytes, n;
- struct task task;
- struct utask utask;
- struct uthread thread;
-
- /*
- * Check if the process is currently loaded or swapped out. The way we
- * get the u area is totally different for the two cases. For this
- * application, we just don't bother if the process is swapped out.
- */
- /* NEXTSTEP proc.h
- * One structure allocated per active
- * process. It contains all data needed
- * about the process while the
- * process may be swapped out.
- * Other per process data (user.h)
- * is swapped with the process.
- */
-
- if ((p->p_flag & SLOAD) == 0) {
- /* User info is always in core.
- * #ifdef DOSWAP
- * if (lseek(swap, (long)dtob(p->p_swaddr), 0) == -1) {
- * perror("lseek(swap)");
- * return(-1);
- * }
- * if (read(swap, (char *) u, sizeof(struct user)) != sizeof(struct user)) {
- * perror("read(swap)");
- * return(-1);
- * }
- * return (1);
- * #else
- */
- return(-1);
- /*#endif
- */
- }
-
- /*
- * Process is currently in memory, we hope!
- */
- /* getkval(p->task, (int *)&uutask, 40*sizeof(int), "task");
- for(i=0; i<40; i++) printf("task[%i]=%i\n", i, uutask[i]);
- getkval(task.u_address, (int *)&uutask, 40*sizeof(int), "task.u_address");
- for(i=0; i<40; i++) printf("utask[%i]=%i, %s\n", i, uutask[i], &uutask[i]);
- */
-
-
- if(!getkval(p->task, (int *)&task, sizeof(struct task), "task")) {
- #ifdef DEBUG
- perror("getkval(p->task)");
- #endif
- /* we can't seem to get to it, so pretend it's swapped out */
- return(-1);
- }
-
-
- if(!getkval(task.u_address, (int *)&utask, sizeof(struct utask), "task.u_address")) {
- #ifdef DEBUG
- perror("getkval(task->utask)");
- #endif
- /* we can't seem to get to it, so pretend it's swapped out */
- return(-1);
- }
-
- /* Copy utask and uthread info into struct user *u */
- /* This is incomplete. Only copied info needed. */
-
- u->u_procp = utask.uu_procp;
- u->u_ar0 = utask.uu_ar0;
- u->u_ru = utask.uu_ru;
- strcpy(u->u_comm, utask.uu_comm);
- nbytes = strlen(u->u_comm);
- for(n=nbytes; n<MAXCOMLEN; n++)
- u->u_comm[n] = ' ';
- u->u_comm[MAXCOMLEN] = '\0';
- return(0);
- }
-
- /*
- * check_nlist(nlst) - checks the nlist to see if any symbols were not
- * found. For every symbol that was not found, a one-line
- * message is printed to stderr. The routine returns the
- * number of symbols NOT found.
- */
-
- int check_nlist(register struct nlist *nlst)
- {
- register int i;
-
- /* check to see if we got ALL the symbols we requested */
- /* this will write one line to stderr for every symbol not found */
-
- i = 0;
- while (nlst->n_un.n_name != NULL)
- {
- if (nlst->n_type == 0 && nlst->n_value == 0)
- {
- /* this one wasn't found */
- fprintf(stderr, "kernel: no symbol named `%s'\n", nlst->n_un.n_name);
- i = 1;
- }
- nlst++;
- }
-
- return(i);
- }
-
-
- /*
- * getkval(offset, ptr, size, refstr) - get a value out of the kernel.
- * "offset" is the byte offset into the kernel for the desired value,
- * "ptr" points to a buffer into which the value is retrieved,
- * "size" is the size of the buffer (and the object to retrieve),
- * "refstr" is a reference string used when printing error meessages,
- * if "refstr" starts with a '!', then a failure on read will not
- * be fatal (this may seem like a silly way to do things, but I
- * really didn't want the overhead of another argument).
- *
- */
-
- getkval(unsigned long offset, int *ptr, int size, char *refstr)
- {
- if (lseek(kmem, (long)offset, L_SET) == -1) {
- if (*refstr == '!')
- refstr++;
- (void) fprintf(stderr, "%s: lseek to %s: %s\n", KMEM,
- refstr, strerror(errno));
- quit(23);
- }
- if (read(kmem, (char *) ptr, size) == -1) {
- if (*refstr == '!')
- return(0);
- else {
- (void) fprintf(stderr, "%s: reading %s: %s\n", KMEM,
- refstr, strerror(errno));
- quit(23);
- }
- }
- return(1);
- }
-
- /* comparison routine for qsort */
-
- /*
- * proc_compare - comparison function for "qsort"
- * Compares the resource consumption of two processes using five
- * distinct keys. The keys (in descending order of importance) are:
- * percent cpu, cpu ticks, state, resident set size, total virtual
- * memory usage. The process states are ordered as follows (from least
- * to most important): WAIT, zombie, sleep, stop, start, run. The
- * array declaration below maps a process state index into a number
- * that reflects this ordering.
- */
-
- static unsigned char sorted_state[] =
- {
- 0, /* not used */
- 3, /* sleep */
- 1, /* ABANDONED (WAIT) */
- 6, /* run */
- 5, /* start */
- 2, /* zombie */
- 4 /* stop */
- };
-
- proc_compare(struct proc_unix *pp1, struct proc_unix *pp2)
- {
- register struct proc *p1 = pp1->p_self;
- register struct proc *p2 = pp2->p_self;
- register int result;
- register pctcpu lresult;
-
- /* compare percent cpu (pctcpu) */
- if ((lresult = pp2->p_pctcpu - pp1->p_pctcpu) == 0)
- {
- /* use cpticks to break the tie */
- if ((result = P_CPTICKS(p2) - P_CPTICKS(p1)) == 0)
- {
- /* use process state to break the tie */
- if ((result = sorted_state[p2->p_stat] - sorted_state[p1->p_stat]) == 0)
- {
- /* use priority to break the tie */
- if ((result = p2->p_pri - p1->p_pri) == 0)
- {
- /* use resident set size (rssize) to break the tie */
- if ((result = pp2->p_rsize - pp1->p_rsize) == 0)
- {
- /* use total memory to break the tie */
- result = pp2->p_vsize - pp1->p_vsize;
- }
- }
- }
- }
- }
- else
- {
- result = lresult < 0 ? -1 : 1;
- }
-
- return(result);
- }
-
- /*
- * proc_owner(pid) - returns the uid that owns process "pid", or -1 if
- * the process does not exist.
- * It is EXTREMLY IMPORTANT that this function work correctly.
- * If top runs setuid root (as in SVR4), then this function
- * is the only thing that stands in the way of a serious
- * security problem. It validates requests for the "kill"
- * and "renice" commands.
- */
-
- int proc_owner(int pid)
- {
- register int cnt;
- register struct proc *pp;
-
- cnt = pref_count;
- while (--cnt >= 0)
- {
- pp = pref[cnt].p_self;
- if( pp->p_pid == pid ) /* Modified (pid_t)pid to pid, compiler error. */
- {
- return((int)pp->p_uid);
- }
- }
- return(-1);
- }
-
- int thread_stats(int pid, struct thread_basic_info *info, int *thread_count)
- {
- int i;
- kern_return_t status;
- kern_return_t status_dealloc;
- task_t p_task;
- thread_array_t thread_list, list;
- struct thread_basic_info threadInfo;
- unsigned int info_count = THREAD_BASIC_INFO_COUNT;
-
- /* Get the task pointer for the process. */
- status = task_by_unix_pid( task_self(), pid, &p_task);
- if (status!=KERN_SUCCESS)
- {
- #ifdef DEBUG
- printf("pid = %i\n", pid);
- mach_error("Error calling task_by_unix_pid()", status);
- #endif
- return status;
- }
-
- /* Get the list of threads for the task. */
- status = task_threads(p_task, &thread_list, thread_count);
- if (status!=KERN_SUCCESS)
- {
- #ifdef DEBUG
- mach_error("Error calling task_threads()", status);
- #endif
- return status;
- }
-
- /* Get the pctcpu value for each thread and sum the values */
- info->user_time.seconds = 0;
- info->user_time.microseconds = 0;
- info->system_time.seconds = 0;
- info->system_time.microseconds = 0;
- info->cpu_usage = 0;
- info->sleep_time = 0;
-
- for(i=0; i<*thread_count; i++)
- {
- status = thread_info(thread_list[i], THREAD_BASIC_INFO,
- (thread_info_t)&threadInfo, &info_count);
- if (status!=KERN_SUCCESS)
- {
- #ifdef DEBUG
- mach_error("Error calling thread_info()", status);
- #endif
- break;
- } else {
- if(i==0)
- {
- info->base_priority = threadInfo.base_priority;
- info->cur_priority = threadInfo.cur_priority;
- info->run_state = threadInfo.run_state;
- info->flags = threadInfo.flags;
- info->suspend_count = threadInfo.suspend_count;
- info->sleep_time += threadInfo.sleep_time;
- }
- info->user_time.seconds += threadInfo.user_time.seconds;
- info->user_time.microseconds += threadInfo.user_time.microseconds;
- info->system_time.seconds += threadInfo.system_time.seconds;
- info->system_time.microseconds += threadInfo.system_time.microseconds;
- info->cpu_usage += threadInfo.cpu_usage;
- }
- }
-
- /* Deallocate the list of threads. */
- status_dealloc = vm_deallocate(task_self(), (vm_address_t)thread_list,
- sizeof(thread_list)*(*thread_count));
- if (status_dealloc != KERN_SUCCESS)
- {
- #ifdef DEBUG
- mach_error("Trouble freeing thread_list", status_dealloc);
- #endif
- status = status_dealloc;
- }
- return status;
- }
-
- int mach_load_avg(void)
- {
- kern_return_t status;
- host_t host;
- unsigned int info_count;
- struct processor_set_basic_info info;
- processor_set_t default_set;
-
- status=processor_set_default(host_self(), &default_set);
- if (status!=KERN_SUCCESS){
- mach_error("Error calling processor_set_default", status);
- exit(1);
- }
-
- info_count=PROCESSOR_SET_BASIC_INFO_COUNT;
- status=processor_set_info(default_set, PROCESSOR_SET_BASIC_INFO,
- &host, (processor_set_info_t)&info, &info_count);
- #ifdef DEBUG
- if (status != KERN_SUCCESS)
- mach_error("Error calling processor_set_info", status);
- #endif
- return info.load_average;
- }
-
- kern_return_t task_stats(int pid, struct task_basic_info *info)
- {
- kern_return_t status;
- task_t p_task;
- unsigned int info_count=TASK_BASIC_INFO_COUNT;
-
- /* Get the task pointer for the process. */
- status = task_by_unix_pid( task_self(), pid, &p_task);
- if (status!=KERN_SUCCESS) {
- #ifdef DEBUG
- printf("pid = %i\n", pid);
- mach_error("Error calling task_by_unix_pid()", status);
- #endif
- return(status);
- }
-
- status=task_info(p_task, TASK_BASIC_INFO, (task_info_t)info, &info_count);
- if (status!=KERN_SUCCESS) {
- #ifdef DEBUG
- mach_error("Error calling task_info()", status);
- #endif
- return(status);
- }
- return(KERN_SUCCESS);
- }
-