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fix process attach

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This commit is contained in:
Stefani Seibold 2018-04-12 11:14:11 +02:00
parent b58a41680a
commit dc6b85bd8b
1 changed files with 16 additions and 9 deletions
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25
sysdeps/linux-gnu/proc.c
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@ -163,14 +163,14 @@ int process_tasks(pid_t pid, pid_t ** ret_tasks, size_t *ret_n)
for(;;) { for(;;) {
struct dirent *result; struct dirent *result;
errno = 0;
result = readdir(d); result = readdir(d);
if (!result) {
free(tasks);
return -1;
}
if (result == NULL) if (!result) {
if (errno)
goto fail;
break; break;
}
if (result->d_type == DT_DIR && all_digits(result->d_name)) { if (result->d_type == DT_DIR && all_digits(result->d_name)) {
pid_t npid = atoi(result->d_name); pid_t npid = atoi(result->d_name);
@ -181,10 +181,9 @@ int process_tasks(pid_t pid, pid_t ** ret_tasks, size_t *ret_n)
alloc = n > 0 ? (2 * n) : 8; alloc = n > 0 ? (2 * n) : 8;
ntasks = realloc(tasks, sizeof(*tasks) * alloc); ntasks = realloc(tasks, sizeof(*tasks) * alloc);
if (!ntasks) { if (!ntasks)
free(tasks); goto fail;
return -1;
}
tasks = ntasks; tasks = ntasks;
} }
tasks[n++] = npid; tasks[n++] = npid;
@ -197,6 +196,14 @@ int process_tasks(pid_t pid, pid_t ** ret_tasks, size_t *ret_n)
*ret_n = n; *ret_n = n;
return 0; return 0;
fail:
free(tasks);
closedir(d);
*ret_tasks = NULL;
*ret_n = 0;
return -1;
} }
/* On native 64-bit system, we need to be careful when handling cross /* On native 64-bit system, we need to be careful when handling cross