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1.1 root 1: #include <sys/param.h>
2: #include <sys/proc.h>
3: #include <sys/sched.h>
4: #include <sys/dir.h>
5: #include <sys/seg.h>
6: #include <sys/stat.h>
7: #include <sys/uproc.h>
8: #include <sys/signal.h>
9: #include <stdio.h>
10: #include <ctype.h>
11: #include <a.out.h>
12: #include <pwd.h>
13:
14: /*
15: * This is a kludge for the i8086 only and will be
16: * made to disappear when the segmentation (jproto)
17: * is thrown away.
18: */
19: #undef SISTACK
20: #define SISTACK SIPDATA
21:
22: /*
23: * Maximum sizes.
24: */
25: #define ARGSIZE 512
26:
27: /*
28: * For easy referencing.
29: */
30: #define NUM_SYMS 5 /* Number of symbols to look up. */
31: #define aprocq nl[0].n_value
32: #define autimer nl[1].n_value
33: #define astimer nl[2].n_value
34: #define aend nl[4].n_value
35:
36: /*
37: * Variables.
38: */
39: int aflag; /* All processes */
40: int dflag; /* Driver flag */
41: int dbflag; /* Debug flag */
42: int fflag; /* Print out all fields */
43: int gflag; /* Print out process groups */
44: int lflag; /* Long format */
45: int mflag; /* Print scheduling values */
46: int nflag; /* No header */
47: int rflag; /* Print out real sizes */
48: int tflag; /* Print times */
49: int wflag; /* Wide format */
50: int xflag; /* Get special processes */
51: dev_t ttdev; /* Terminal device */
52:
53: /*
54: * Table for namelist.
55: */
56: SYMENT nl[NUM_SYMS];
57:
58: /*
59: * Symbols.
60: */
61: char *allp; /* Pointer to alloc space */
62: char *nfile; /* Namelist file */
63: char *mfile; /* Memory file */
64: char *dfile; /* Swap file */
65: char argp[ARGSIZE]; /* Arguments */
66: int kfd; /* Kernel memory file descriptor */
67: int mfd; /* Memory file descriptor */
68: int dfd; /* Swap file descriptor */
69: struct uproc u; /* User process area */
70: unsigned cutimer; /* Unsigned time */
71: PROC cprocq; /* Process queue header */
72: PROC w;
73:
74: unsigned casize; /* Size of alloc area */
75:
76: char *malloc();
77: char *uname();
78:
79: main(argc, argv)
80: int argc;
81: char *argv[];
82: {
83: initialise();
84: execute();
85: exit(0);
86: }
87:
88: /*
89: * Initialise.
90: */
91: initialise()
92: {
93: register char *cp;
94:
95: /* Initialise the request for coffnlist(). */
96: /* The values are a STUB, taken from the kernel at386.11. */
97: strcpy(nl[0]._n._n_name, "procq");
98: nl[0].n_type = 0;
99: nl[0].n_value = 0xFFC170A0;
100: strcpy(nl[1]._n._n_name, "utimer");
101: nl[1].n_type = 0;
102: nl[1].n_value = 0xFFC17FB8;
103: strcpy(nl[2]._n._n_name, "stimer");
104: nl[2].n_type = 0;
105: nl[2].n_value = 0xFFC183C4;
106: strcpy(nl[3]._n._n_name, "asize");
107: nl[3].n_type = 0;
108: nl[3].n_value = 0xFFC1858C;
109: strcpy(nl[4]._n._n_name, "end");
110: nl[4].n_type = 0;
111: nl[4].n_value = 0xFFC1866C;
112: }
113:
114: /*
115: * Print out usage.
116: */
117: usage()
118: {
119: panic("Usage: ps [-][acdfgklmnrtwx]");
120: }
121:
122: /*
123: * Print out information about processes.
124: */
125: execute()
126: {
127: int c, l;
128:
129: if ((kfd = open("/dev/kmem", 0)) < 0)
130: panic("Cannot open /dev/kmem");
131:
132: kread((long)autimer, &cutimer, sizeof (cprocq));
133: fprintf(stderr, "DEBUG: cutimer: %d\n", cutimer);
134: sleep(1);
135: kread((long)autimer, &cutimer, sizeof (cprocq));
136: fprintf(stderr, "DEBUG: cutimer: %d\n", cutimer);
137:
138: kread((long)aprocq, &cprocq, sizeof (cprocq));
139: fprintf(stderr, "DEBUG: cprocq.p_pid: %d\n", cprocq.p_pid);
140: fprintf(stderr, "DEBUG: cprocq.p_nforw: %x\n", cprocq.p_nforw);
141: fprintf(stderr, "DEBUG: cprocq.p_nback: %x\n", cprocq.p_nback);
142:
143: kread((long)cprocq.p_nforw, &w, sizeof (w));
144: while (w.p_nforw != cprocq.p_nforw) {
145: printf("DEBUG: w.p_pid: %d\n", w.p_pid);
146: printf("DEBUG: w.p_nforw: %x\n", w.p_nforw);
147: printf("DEBUG: w.p_nback: %x\n", w.p_nback);
148: kread((long)w.p_nforw, &w, sizeof (w));
149: }
150: }
151: /*
152: * Read `n' bytes into the buffer `bp' from kernel memory
153: * starting at seek position `s'.
154: */
155: kread(s, bp, n)
156: long s;
157: {
158: lseek(kfd, (long)s, 0);
159: if (read(kfd, bp, n) != n)
160: panic("Kernel memory read error");
161: }
162:
163: /*
164: * Print out an error message and exit.
165: */
166: panic(a1)
167: char *a1;
168: {
169: fflush(stdout);
170: fprintf(stderr, "%s", a1);
171: fprintf(stderr, "\n");
172: exit(1);
173: }
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