proc.c revision 35d70634aacdf85a3cdf85792ce68989e27bc9c2 
1#include <sys/types.h>
2#include <string.h>
3#include <stdio.h>
4#include <errno.h>
5#include <stdlib.h>
6
7#include "ltrace.h"
8#include "options.h"
9#include "elf.h"
10
11struct process * open_program(char * filename)
12{
13	struct process * proc;
14	proc = malloc(sizeof(struct process));
15	if (!proc) {
16		perror("malloc");
17		exit(1);
18	}
19	proc->filename = filename;
20	proc->pid = 0;
21	proc->breakpoints_enabled = -1;
22	proc->current_syscall = -1;
23	proc->current_symbol = NULL;
24	proc->breakpoint_being_enabled = NULL;
25	proc->next = NULL;
26	if (opt_L && filename) {
27		proc->list_of_symbols = read_elf(filename);
28	} else {
29		proc->list_of_symbols = NULL;
30	}
31
32	proc->next = list_of_processes;
33	list_of_processes = proc;
34	return proc;
35}
36
37void open_pid(pid_t pid, int verbose)
38{
39	struct process * proc;
40	char * filename;
41
42	if (trace_pid(pid)<0) {
43#if 0
44		if (verbose) {
45#endif
46			fprintf(stderr, "Cannot attach to pid %u: %s\n", pid, strerror(errno));
47#if 0
48		}
49#endif
50		return;
51	}
52
53	filename = pid2name(pid);
54
55#if 0
56	if (!filename) {
57		if (verbose) {
58			fprintf(stderr, "Cannot trace pid %u: %s\n", pid, strerror(errno));
59		}
60		return;
61	}
62#endif
63
64	proc = open_program(filename);
65	proc->pid = pid;
66}
67