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-rw-r--r--procfs_pid_files.c583
1 files changed, 0 insertions, 583 deletions
diff --git a/procfs_pid_files.c b/procfs_pid_files.c
deleted file mode 100644
index 26a0af3..0000000
--- a/procfs_pid_files.c
+++ /dev/null
@@ -1,583 +0,0 @@
-/* procfs -- a translator for providing GNU/Linux compatible
- proc pseudo-filesystem
-
- procfs_pid_files.c -- This file contains definitions to perform
- file operations such as creating, writing to,
- reading from and removing files that holds
- information for each process with PID
-
- Copyright (C) 2008, FSF.
- Written as a Summer of Code Project
-
-
- procfs is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2, or (at
- your option) any later version.
-
- procfs is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
-
- A portion of the code in this file is based on ftpfs code
- present in the hurd repositories copyrighted to FSF. The
- Copyright notice from that file is given below.
-
-*/
-
-#include <hurd/netfs.h>
-#include <fcntl.h>
-#include <string.h>
-#include <stdio.h>
-#include <mach/task_info.h>
-#include <sys/resource.h>
-
-#include "procfs_pid.h"
-
-/* Update the files named NAME within the directory named
- PID also with SYMLINK TARGET if necessary. */
-struct procfs_dir_entry*
-update_pid_entries (struct procfs_dir *dir, const char *name,
- time_t timestamp,
- const char *symlink_target)
-{
- struct stat stat;
-
- memset (&stat, 0, sizeof stat);
- if (symlink_target)
- {
- stat.st_size = strlen (symlink_target);
- stat.st_mode = S_IFLNK | 0777;
- }
- else
- {
- stat.st_size = 0;
- stat.st_mode = S_IFREG | 0444;
- }
-
- return update_entries_list (dir, name, &stat, timestamp, symlink_target);
-}
-
-/* Creates files to store process information for DIR
- whose names are pids and returns these files in *NODE. */
-error_t
-procfs_create_files (struct procfs_dir *dir,
- struct node **node,
- time_t timestamp)
-{
- int err;
- char *file_name, *file_path;
- struct procfs_dir_entry *dir_entry;
-
- if (asprintf (&file_name, "%s", "stat") == -1)
- return errno;
- if (asprintf (&file_path, "%s/%s", dir->node->nn->dir_entry->name, "stat") == -1)
- return errno;
-
- dir_entry = update_pid_entries (dir, file_name, timestamp, NULL);
- err = procfs_create_node (dir_entry, file_path, node);
-
- free (file_name);
- free (file_path);
-
- if (asprintf (&file_name, "%s", "status") == -1)
- return errno;
- if (asprintf (&file_path, "%s/%s", dir->node->nn->dir_entry->name, "status") == -1)
- return errno;
-
- dir_entry = update_pid_entries (dir, file_name, timestamp, NULL);
- err = procfs_create_node (dir_entry, file_path, node);
-
- free (file_name);
- free (file_path);
-
- if (asprintf (&file_name, "%s", "cmdline") == -1)
- return errno;
- if (asprintf (&file_path, "%s/%s", dir->node->nn->dir_entry->name, "cmdline") == -1)
- return errno;
-
- dir_entry = update_pid_entries (dir, file_name, timestamp, NULL);
- err = procfs_create_node (dir_entry, file_path, node);
-
- free (file_name);
- free (file_path);
-
- if (asprintf (&file_name, "%s", "statm") == -1)
- return errno;
- if (asprintf (&file_path, "%s/%s", dir->node->nn->dir_entry->name, "statm") == -1)
- return errno;
-
- dir_entry = update_pid_entries (dir, file_name, timestamp, NULL);
- err = procfs_create_node (dir_entry, file_path, node);
-
- free (file_name);
- free (file_path);
-
-#if 0
- nodes_list = &node_stat;
- nodes_list++;
- node = nodes_list;
-#endif
-
- return err;
-}
-
-/* Check if the PSTAT_FLAG is set in the corresponding PS
- structure, if not set it and check again and return error
- status accordingly. */
-error_t set_field_value (struct proc_stat *ps, int pstat_flag)
-{
- error_t err;
-
- if (! (ps->flags & pstat_flag))
- {
- err = proc_stat_set_flags (ps, pstat_flag);
- if (err)
- return err;
-
- /* This second check is done since ps.h specifies to
- do so since the previous call would not have set
- the required value. */
- if (! (ps->flags & pstat_flag))
- return EGRATUITOUS;
- }
-
- return 0;
-}
-
-/* Adjusts TIME_VAL structure having Seconds and
- Microseconds into the value in jiffies. The
- value of jiffy is a hack to adjust to what
- procps uses. */
-jiffy_t adjust_jiffy_time (time_value_t time_val)
-{
- jiffy_t jiffy_time = time_val.seconds * JIFFY_ADJUST;
- jiffy_time += (time_val.microseconds * JIFFY_ADJUST)
- / (1000 * 1000);
-
- return jiffy_time;
-}
-
-/* Extract the user and system time for the live threads of
- the process. This information is directly retrieved from
- MACH since neither libps not proc makes this available. */
-error_t get_task_thread_times (task_t task,
- struct task_thread_times_info *live_threads_times)
-{
- error_t err;
- size_t tkcount = TASK_THREAD_TIMES_INFO_COUNT;
-
- err = task_info (task, TASK_THREAD_TIMES_INFO,
- (task_info_t) live_threads_times, &tkcount);
- if (err == MACH_SEND_INVALID_DEST)
- err = ESRCH;
-
- return err;
-}
-
-/* Obtains the User Time in UTIME and System Time in STIME from
- MACH directly since this is neither made available by libps
- nor by proc server. */
-error_t get_live_threads_time (struct proc_stat *ps,
- jiffy_t *utime, jiffy_t *stime)
-{
- struct task_thread_times_info live_threads_times;
- error_t err = set_field_value (ps, PSTAT_TASK);
-
- if (! err)
- {
- err = get_task_thread_times (ps->task, &live_threads_times);
- if (! err)
- {
- *utime = adjust_jiffy_time (
- live_threads_times.user_time);
- *stime = adjust_jiffy_time (
- live_threads_times.system_time);
- }
- }
-
- return err;
-}
-
-/* Get the data for stat file into the structure
- PROCFS_STAT. */
-error_t get_stat_data (pid_t pid,
- struct procfs_stat **procfs_stat)
-{
- error_t err;
- struct procfs_stat *new = (struct procfs_stat *)
- malloc (sizeof (struct procfs_stat));
-
- struct proc_stat *ps;
- jiffy_t utime, stime;
-
- err = _proc_stat_create (pid, ps_context, &ps);
-
- new->pid = pid;
-
- if (! err)
- {
- err = set_field_value (ps, PSTAT_ARGS);
- if (! err)
- asprintf (&new->comm, "%s", ps->args);
- }
-
- err = set_field_value (ps, PSTAT_STATE);
- if (! err)
- {
- if (ps->state & PSTAT_STATE_P_STOP)
- new->state = strdup ("T");
- if (ps->state & PSTAT_STATE_P_ZOMBIE)
- new->state = strdup ("Z");
- if (ps->state & PSTAT_STATE_P_FG)
- new->state = strdup ("+");
- if (ps->state & PSTAT_STATE_P_SESSLDR)
- new->state = strdup ("s");
- if (ps->state & PSTAT_STATE_P_LOGINLDR)
- new->state = strdup ("l");
- if (ps->state & PSTAT_STATE_P_FORKED)
- new->state = strdup ("f");
- if (ps->state & PSTAT_STATE_P_NOMSG)
- new->state = strdup ("m");
- if (ps->state & PSTAT_STATE_P_NOPARENT)
- new->state = strdup ("p");
- if (ps->state & PSTAT_STATE_P_ORPHAN)
- new->state = strdup ("o");
- if (ps->state & PSTAT_STATE_P_TRACE)
- new->state = strdup ("x");
- if (ps->state & PSTAT_STATE_P_WAIT)
- new->state = strdup ("w");
- if (ps->state & PSTAT_STATE_P_GETMSG)
- new->state = strdup ("g");
- }
-
- err = set_field_value (ps, PSTAT_PROC_INFO);
- if (! err)
- {
- new->ppid = ps->proc_info->ppid;
- new->pgid = ps->proc_info->pgrp;
- new->sid = ps->proc_info->session;
- new->tty_pgrp = ps->proc_info->pgrp;
- }
- else
- {
- new->ppid = 0;
- new->pgid = 0;
- new->sid = 0;
- new->tty_pgrp = 0;
- }
-
- err = set_field_value (ps, PSTAT_STATE);
- if (! err)
- new->flags = ps->state;
- else
- new->flags = 0;
-
- err = set_field_value (ps, PSTAT_TASK_EVENTS);
- if (! err)
- {
- new->minflt = ps->task_events_info->faults;
- new->majflt = ps->task_events_info->pageins;
- }
- else
- {
- new->minflt = 0;
- new->majflt = 0;
- }
-
- /* This seems to be a bit inconsistent with setting of other
- fields in this code. There are two reasons for this.
- 1. The actual information required is not made available
- by libps which should be directly obtained from MACH.
- 2. The same code which is required to get the information
- have to be reused in procfs_nonpid_files.c */
- err = get_live_threads_time (ps, &utime, &stime);
- if (! err)
- {
- new->utime = utime;
- new->stime = stime;
- }
- else
- {
- new->utime = 0;
- new->stime = 0;
- }
-
- err = set_field_value (ps, PSTAT_TASK_BASIC);
- if (! err)
- {
- new->cutime = adjust_jiffy_time (
- ps->task_basic_info->user_time);
- new->cstime = adjust_jiffy_time (
- ps->task_basic_info->system_time);
-
- new->priority = ps->task_basic_info->base_priority;
- new->starttime = adjust_jiffy_time (
- ps->task_basic_info->creation_time);
-
- new->vsize = ps->task_basic_info->virtual_size;
- new->rss = ps->task_basic_info->resident_size;
- }
- else
- {
- new->cutime = 0;
- new->cstime = 0;
- new->priority = 0;
- new->starttime = 0;
- new->vsize = 0;
- new->rss = 0;
- }
-
- new->nice = getpriority (0, pid);
-
- err = set_field_value (ps, PSTAT_NUM_THREADS);
- if (! err)
- new->num_threads = ps->num_threads;
- else
- new->num_threads = 0;
-
- /* Not Supported in Linux 2.6 or later. */
- new->tty_nr = 0;
- new->itrealvalue = 0;
- new->nswap = 0;
- new->cnswap = 0;
-
- /* Temporarily set to 0 until correct
- values are found .*/
- new->cminflt = 0;
- new->cmajflt = 0;
- new->rlim = 0;
- new->startcode = 0;
- new->endcode = 0;
- new->startstack = 0;
- new->kstkesp = 0;
- new->kstkeip = 0;
- new->signal = 0;
- new->blocked = 0;
- new->sigignore = 0;
- new->sigcatch = 0;
- new->wchan = 0;
- new->exit_signal = 0;
- new->processor = 0;
- new->rt_priority = 0;
- new->policy = 0;
- new->delayacct_blkio_ticks = 0;
-
- *procfs_stat = new;
- _proc_stat_free (ps);
-
- return err;
-}
-
-/* Reads required process information from stat file
- within the directory represented by pid. Return
- the data in DATA and actual length to be written
- in LEN. */
-error_t
-procfs_read_stat_file (struct procfs_dir_entry *dir_entry,
- off_t offset, size_t *len, void *data)
-{
- error_t err;
- char *stat_data;
- struct procfs_stat *procfs_stat;
- pid_t pid = atoi (dir_entry->dir->node->nn->dir_entry->name);
-
- err = get_stat_data (pid, &procfs_stat);
-
- if (asprintf (&stat_data, "%d (%s) %s %d %d %d %d %d %u %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld %llu %lu %ld %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %d %d %u %u %llu \n",
- procfs_stat->pid, procfs_stat->comm,
- procfs_stat->state, procfs_stat->ppid,
- procfs_stat->pgid, procfs_stat->sid,
- procfs_stat->tty_nr, procfs_stat->tty_pgrp,
- procfs_stat->flags, procfs_stat->minflt,
- procfs_stat->cminflt, procfs_stat->majflt,
- procfs_stat->cmajflt, procfs_stat->utime,
- procfs_stat->stime, procfs_stat->cutime,
- procfs_stat->cstime, procfs_stat->priority,
- procfs_stat->nice, procfs_stat->num_threads,
- procfs_stat->itrealvalue, procfs_stat->starttime,
- procfs_stat->vsize, BYTES_TO_PAGES(procfs_stat->rss),
- procfs_stat->rlim, procfs_stat->startcode,
- procfs_stat->endcode, procfs_stat->startstack,
- procfs_stat->kstkesp, procfs_stat->kstkeip,
- procfs_stat->signal, procfs_stat->blocked,
- procfs_stat->sigignore, procfs_stat->sigcatch,
- procfs_stat->wchan, procfs_stat->nswap,
- procfs_stat->cnswap, procfs_stat->exit_signal,
- procfs_stat->processor, procfs_stat->rt_priority,
- procfs_stat->policy,
- procfs_stat->delayacct_blkio_ticks) == -1)
- return errno;
-
-
- memcpy (data, stat_data, strlen(stat_data));
- *len = strlen (data);
-
- free (stat_data);
- free (procfs_stat);
-
- return err;
-}
-
-/* Reads required process's command line information
- from cmline file within the directory represented
- by pid. Return the data in DATA and actual length
- to be written in LEN. */
-error_t
-procfs_read_cmdline_file (struct procfs_dir_entry *dir_entry,
- off_t offset, size_t *len, void *data)
-{
- char *cmdline_data;
- error_t err;
- struct proc_stat *ps;
- pid_t pid = atoi (dir_entry->dir->node->nn->dir_entry->name);
- err = _proc_stat_create (pid, ps_context, &ps);
-
- err = set_field_value (ps, PSTAT_ARGS);
-
- if (! err)
- if (asprintf (&cmdline_data, "%s \n", ps->args) == -1)
- return errno;
-
- memcpy (data, cmdline_data, strlen(cmdline_data));
- *len = strlen (data);
-
- _proc_stat_free (ps);
- free (cmdline_data);
- return err;
-}
-
-/* Reads required process's information that is represented by
- stat and statm in a human readable format from status file
- within the directory represented by pid. Return the data
- in DATA and actual length to be written in LEN. */
-error_t
-procfs_read_status_file (struct procfs_dir_entry *dir_entry,
- off_t offset, size_t *len, void *data)
-{
- char *status_data;
- error_t err;
- struct proc_stat *ps;
- struct procfs_stat *procfs_stat;
-
- pid_t pid = atoi (dir_entry->dir->node->nn->dir_entry->name);
- err = _proc_stat_create (pid, ps_context, &ps);
-
- err = get_stat_data (pid, &procfs_stat);
-
- if (! err)
- if (asprintf (&status_data, "Name:\t%s\nState:\t%s\nTgid:\t%d\nPid:\t%d\n", procfs_stat->comm, procfs_stat->state, procfs_stat->pid, procfs_stat->pid) == -1)
- return errno;
-
- memcpy (data, status_data, strlen(status_data));
- *len = strlen (data);
-
- _proc_stat_free (ps);
-
- free (status_data);
- free (procfs_stat);
-
- return err;
-}
-
-/* Reads required process information from statm file
- within the directory represented by pid. Return
- the data in DATA and actual length to be written
- in LEN. */
-error_t
-procfs_read_statm_file (struct procfs_dir_entry *dir_entry,
- off_t offset, size_t *len, void *data)
-{
- char *statm_data;
- error_t err;
- struct proc_stat *ps;
- struct procfs_stat *procfs_stat;
-
- pid_t pid = atoi (dir_entry->dir->node->nn->dir_entry->name);
- err = _proc_stat_create (pid, ps_context, &ps);
-
- err = get_stat_data (pid, &procfs_stat);
-
- if (! err)
- if (asprintf (&statm_data, "%lu %ld %d %d %d %d %d\n",
- BYTES_TO_PAGES(procfs_stat->vsize),
- BYTES_TO_PAGES(procfs_stat->rss),
- 0, 0, 0, 0, 0) == -1)
- return errno;
-
- memcpy (data, statm_data, strlen(statm_data));
- *len = strlen (data);
-
- _proc_stat_free (ps);
-
- free (statm_data);
- free (procfs_stat);
-
- return err;
-}
-
-/* Reads required process information from each of files
- within directory represented by pid, for files specified
- by NODE. Return the data in DATA and actual length of
- data in LEN. */
-error_t
-procfs_read_files_contents (struct node *node,
- off_t offset, size_t *len, void *data)
-{
- error_t err;
-
- if (! strcmp (node->nn->dir_entry->name, "stat"))
- if (! strcmp (node->nn->dir_entry->dir->fs_path, ""))
- err = procfs_read_nonpid_stat (node->nn->dir_entry,
- offset, len, data);
- else
- err = procfs_read_stat_file (node->nn->dir_entry,
- offset, len, data);
-
- if (! strcmp (node->nn->dir_entry->name, "cmdline"))
- err = procfs_read_cmdline_file (node->nn->dir_entry,
- offset, len, data);
-
- if (! strcmp (node->nn->dir_entry->name, "status"))
- err = procfs_read_status_file (node->nn->dir_entry,
- offset, len, data);
-
- if (! strcmp (node->nn->dir_entry->name, "statm"))
- err = procfs_read_statm_file (node->nn->dir_entry,
- offset, len, data);
-
- if (! strcmp (node->nn->dir_entry->name, "meminfo"))
- if (! strcmp (node->nn->dir_entry->dir->fs_path, ""))
- err = procfs_read_nonpid_meminfo (node->nn->dir_entry,
- offset, len, data);
- else
- err = ENOENT;
-
- if (! strcmp (node->nn->dir_entry->name, "loadavg"))
- if (! strcmp (node->nn->dir_entry->dir->fs_path, ""))
- err = procfs_read_nonpid_loadavg (node->nn->dir_entry,
- offset, len, data);
- else
- err = ENOENT;
-
- if (! strcmp (node->nn->dir_entry->name, "uptime"))
- if (! strcmp (node->nn->dir_entry->dir->fs_path, ""))
- err = procfs_read_nonpid_uptime (node->nn->dir_entry,
- offset, len, data);
- else
- err = ENOENT;
-
- if (! strcmp (node->nn->dir_entry->name, "version"))
- if (! strcmp (node->nn->dir_entry->dir->fs_path, ""))
- err = procfs_read_nonpid_version (node->nn->dir_entry,
- offset, len, data);
- else
- err = ENOENT;
-
- return err;
-}
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