*/
struct pid_entry {
- char *name;
+ const char *name;
int len;
umode_t mode;
const struct inode_operations *iop;
return result;
}
-static int proc_pid_cmdline(struct task_struct *task, char *buffer)
+static int proc_pid_cmdline(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
- return get_cmdline(task, buffer, PAGE_SIZE);
+ /*
+ * Rely on struct seq_operations::show() being called once
+ * per internal buffer allocation. See single_open(), traverse().
+ */
+ BUG_ON(m->size < PAGE_SIZE);
+ m->count += get_cmdline(task, m->buf, PAGE_SIZE);
+ return 0;
}
-static int proc_pid_auxv(struct task_struct *task, char *buffer)
+static int proc_pid_auxv(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ);
- int res = PTR_ERR(mm);
if (mm && !IS_ERR(mm)) {
unsigned int nwords = 0;
do {
nwords += 2;
} while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
- res = nwords * sizeof(mm->saved_auxv[0]);
- if (res > PAGE_SIZE)
- res = PAGE_SIZE;
- memcpy(buffer, mm->saved_auxv, res);
+ seq_write(m, mm->saved_auxv, nwords * sizeof(mm->saved_auxv[0]));
mmput(mm);
- }
- return res;
+ return 0;
+ } else
+ return PTR_ERR(mm);
}
* Provides a wchan file via kallsyms in a proper one-value-per-file format.
* Returns the resolved symbol. If that fails, simply return the address.
*/
-static int proc_pid_wchan(struct task_struct *task, char *buffer)
+static int proc_pid_wchan(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
unsigned long wchan;
char symname[KSYM_NAME_LEN];
if (!ptrace_may_access(task, PTRACE_MODE_READ))
return 0;
else
- return sprintf(buffer, "%lu", wchan);
+ return seq_printf(m, "%lu", wchan);
else
- return sprintf(buffer, "%s", symname);
+ return seq_printf(m, "%s", symname);
}
#endif /* CONFIG_KALLSYMS */
}
struct limit_names {
- char *name;
- char *unit;
+ const char *name;
+ const char *unit;
};
static const struct limit_names lnames[RLIM_NLIMITS] = {
};
/* Display limits for a process */
-static int proc_pid_limits(struct task_struct *task, char *buffer)
+static int proc_pid_limits(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
unsigned int i;
- int count = 0;
unsigned long flags;
- char *bufptr = buffer;
struct rlimit rlim[RLIM_NLIMITS];
/*
* print the file header
*/
- count += sprintf(&bufptr[count], "%-25s %-20s %-20s %-10s\n",
+ seq_printf(m, "%-25s %-20s %-20s %-10s\n",
"Limit", "Soft Limit", "Hard Limit", "Units");
for (i = 0; i < RLIM_NLIMITS; i++) {
if (rlim[i].rlim_cur == RLIM_INFINITY)
- count += sprintf(&bufptr[count], "%-25s %-20s ",
+ seq_printf(m, "%-25s %-20s ",
lnames[i].name, "unlimited");
else
- count += sprintf(&bufptr[count], "%-25s %-20lu ",
+ seq_printf(m, "%-25s %-20lu ",
lnames[i].name, rlim[i].rlim_cur);
if (rlim[i].rlim_max == RLIM_INFINITY)
- count += sprintf(&bufptr[count], "%-20s ", "unlimited");
+ seq_printf(m, "%-20s ", "unlimited");
else
- count += sprintf(&bufptr[count], "%-20lu ",
- rlim[i].rlim_max);
+ seq_printf(m, "%-20lu ", rlim[i].rlim_max);
if (lnames[i].unit)
- count += sprintf(&bufptr[count], "%-10s\n",
- lnames[i].unit);
+ seq_printf(m, "%-10s\n", lnames[i].unit);
else
- count += sprintf(&bufptr[count], "\n");
+ seq_putc(m, '\n');
}
- return count;
+ return 0;
}
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
-static int proc_pid_syscall(struct task_struct *task, char *buffer)
+static int proc_pid_syscall(struct seq_file *m, struct pid_namespace *ns,
+ struct pid *pid, struct task_struct *task)
{
long nr;
unsigned long args[6], sp, pc;
return res;
if (task_current_syscall(task, &nr, args, 6, &sp, &pc))
- res = sprintf(buffer, "running\n");
+ seq_puts(m, "running\n");
else if (nr < 0)
- res = sprintf(buffer, "%ld 0x%lx 0x%lx\n", nr, sp, pc);
+ seq_printf(m, "%ld 0x%lx 0x%lx\n", nr, sp, pc);
else
- res = sprintf(buffer,
+ seq_printf(m,
"%ld 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n",
nr,
args[0], args[1], args[2], args[3], args[4], args[5],
struct k_itimer *timer;
struct timers_private *tp = m->private;
int notify;
- static char *nstr[] = {
+ static const char * const nstr[] = {
[SIGEV_SIGNAL] = "signal",
[SIGEV_NONE] = "none",
[SIGEV_THREAD] = "thread",
#ifdef CONFIG_USER_NS
static int proc_id_map_open(struct inode *inode, struct file *file,
- struct seq_operations *seq_ops)
+ const struct seq_operations *seq_ops)
{
struct user_namespace *ns = NULL;
struct task_struct *task;
DIR("net", S_IRUGO|S_IXUGO, proc_net_inode_operations, proc_net_operations),
#endif
REG("environ", S_IRUSR, proc_environ_operations),
- INF("auxv", S_IRUSR, proc_pid_auxv),
+ ONE("auxv", S_IRUSR, proc_pid_auxv),
ONE("status", S_IRUGO, proc_pid_status),
ONE("personality", S_IRUSR, proc_pid_personality),
- INF("limits", S_IRUGO, proc_pid_limits),
+ ONE("limits", S_IRUGO, proc_pid_limits),
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations),
#endif
#endif
REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
- INF("syscall", S_IRUSR, proc_pid_syscall),
+ ONE("syscall", S_IRUSR, proc_pid_syscall),
#endif
- INF("cmdline", S_IRUGO, proc_pid_cmdline),
+ ONE("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("stat", S_IRUGO, proc_tgid_stat),
ONE("statm", S_IRUGO, proc_pid_statm),
REG("maps", S_IRUGO, proc_pid_maps_operations),
DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
#endif
#ifdef CONFIG_KALLSYMS
- INF("wchan", S_IRUGO, proc_pid_wchan),
+ ONE("wchan", S_IRUGO, proc_pid_wchan),
#endif
#ifdef CONFIG_STACKTRACE
ONE("stack", S_IRUSR, proc_pid_stack),
struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsigned int flags)
{
- int result = 0;
+ int result = -ENOENT;
struct task_struct *task;
unsigned tgid;
struct pid_namespace *ns;
- tgid = name_to_int(dentry);
+ tgid = name_to_int(&dentry->d_name);
if (tgid == ~0U)
goto out;
DIR("fdinfo", S_IRUSR|S_IXUSR, proc_fdinfo_inode_operations, proc_fdinfo_operations),
DIR("ns", S_IRUSR|S_IXUGO, proc_ns_dir_inode_operations, proc_ns_dir_operations),
REG("environ", S_IRUSR, proc_environ_operations),
- INF("auxv", S_IRUSR, proc_pid_auxv),
+ ONE("auxv", S_IRUSR, proc_pid_auxv),
ONE("status", S_IRUGO, proc_pid_status),
ONE("personality", S_IRUSR, proc_pid_personality),
- INF("limits", S_IRUGO, proc_pid_limits),
+ ONE("limits", S_IRUGO, proc_pid_limits),
#ifdef CONFIG_SCHED_DEBUG
REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations),
#endif
REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
- INF("syscall", S_IRUSR, proc_pid_syscall),
+ ONE("syscall", S_IRUSR, proc_pid_syscall),
#endif
- INF("cmdline", S_IRUGO, proc_pid_cmdline),
+ ONE("cmdline", S_IRUGO, proc_pid_cmdline),
ONE("stat", S_IRUGO, proc_tid_stat),
ONE("statm", S_IRUGO, proc_pid_statm),
REG("maps", S_IRUGO, proc_tid_maps_operations),
DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
#endif
#ifdef CONFIG_KALLSYMS
- INF("wchan", S_IRUGO, proc_pid_wchan),
+ ONE("wchan", S_IRUGO, proc_pid_wchan),
#endif
#ifdef CONFIG_STACKTRACE
ONE("stack", S_IRUSR, proc_pid_stack),
if (!leader)
goto out_no_task;
- tid = name_to_int(dentry);
+ tid = name_to_int(&dentry->d_name);
if (tid == ~0U)
goto out;
projects / cascardo / linux.git / blobdiff