Adding upstream version 0.34.upstream/0.34upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 270 insertions, 0 deletions

diff --git a/src/temperature.c b/src/temperature.c
new file mode 100644
index 0000000..d6511c3
--- /dev/null
+++ b/src/temperature.c
@@ -0,0 +1,270 @@
+/*
+ *  temperature.c: functions that populate the drive temperature variables
+ *  in each drives context structure.
+ *
+ *  This program 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, version 2.
+ *
+ *  This program 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.,
+ *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+//#define _LARGEFILE64_SOURCE
+//#define _FILE_OFFSET_BITS 64
+#define _BSD_SOURCE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <errno.h>
+#include <dirent.h>
+
+#include "nwipe.h"
+#include "context.h"
+#include "method.h"
+#include "device.h"
+#include "prng.h"
+#include "options.h"
+#include "device.h"
+#include "logging.h"
+#include "temperature.h"
+
+int nwipe_init_temperature( nwipe_context_t* c )
+{
+    /* This function is called after each nwipe_context_t has been created.
+     * It initialises the temperature variables in each context and then
+     * constructs a path that is placed in the context that points to the
+     * appropriate /sys/class/hwmon/hwmonX directory that corresponds with
+     * the particular drive represented in the context structure.
+     */
+    DIR* dir;
+    DIR* dir2;
+    const char dirpath[] = "/sys/class/hwmon";
+    char dirpath_tmp[256];
+    char dirpath_tmp2[256];
+    char dirpath_hwmonX[256];
+    char device[256];
+    char device_context_name[256];
+    // const char dirpath[] = "/home/nick/mouse/hwmon1";
+    struct dirent* dp;
+    struct dirent* dp2;
+
+    /* Why Initialise with 1000000? Because the GUI needs to know whether data
+     * has been obtained so it can display appropriate information when a
+     * device is unable to provide temperature data */
+
+    c->temp1_crit = 1000000;
+    c->temp1_highest = 1000000;
+    c->temp1_input = 1000000;
+    c->temp1_lcrit = 1000000;
+    c->temp1_lowest = 1000000;
+    c->temp1_max = 1000000;
+    c->temp1_min = 1000000;
+    c->temp1_monitored_wipe_max = 1000000;
+    c->temp1_monitored_wipe_min = 1000000;
+    c->temp1_monitored_wipe_avg = 1000000;
+    c->temp1_flash_rate = 2;
+    c->temp1_flash_rate_counter = 0;
+    c->temp1_path[0] = 0;
+    c->temp1_time = 0;
+
+    /* Each hwmonX directory is processed in turn and once a hwmonX directory has been
+     * found that is a block device and the block device name matches the drive
+     * name in the current context then the path to ../hwmonX is constructed and written
+     * to the drive context structure '* c'. This path is used in the nwipe_update_temperature
+     * function to retrieve temperature data and store it in the device context
+     */
+
+    if( ( dir = opendir( dirpath ) ) != NULL )
+    {
+        /* Process each hwmonX sub directory  in turn */
+        while( ( dp = readdir( dir ) ) != NULL )
+        {
+            /* Does the directory start with 'hwmon' */
+            if( strstr( dp->d_name, "hwmon" ) != NULL )
+            {
+                if( nwipe_options.verbose )
+                {
+                    /* print a empty line to separate the different hwmon sensors */
+                    nwipe_log( NWIPE_LOG_DEBUG, "hwmon:" );
+                }
+                strcpy( dirpath_tmp, dirpath );
+                strcat( dirpath_tmp, "/" );
+                strcat( dirpath_tmp, dp->d_name );
+                strcpy( dirpath_hwmonX, dirpath_tmp );
+                strcat( dirpath_tmp, "/device/block" );
+
+                /* Depending on the class of block device, the device name may
+                 * appear in different sub-directories. So we try to open each
+                 * directory that are known to contain block devices. These are
+                 * /sys/class/hwmon/hwmonX/device/block
+                 * /sys/class/hwmon/hwmonX/device/nvme/nvme0
+                 * /sys/class/hwmon/hwmonX/device/
+                 */
+
+                if( ( dir2 = opendir( dirpath_tmp ) ) == NULL )
+                {
+                    if( nwipe_options.verbose )
+                    {
+                        nwipe_log( NWIPE_LOG_DEBUG, "hwmon: %s doesn't exist, trying next path", dirpath_tmp );
+                    }
+                    strcpy( dirpath_tmp2, dirpath_hwmonX );
+                    strcat( dirpath_tmp2, "/device/nvme/nvme0" );
+                    strcpy( dirpath_tmp, dirpath_tmp2 );
+
+                    if( ( dir2 = opendir( dirpath_tmp ) ) == NULL )
+                    {
+                        if( nwipe_options.verbose )
+                        {
+                            nwipe_log( NWIPE_LOG_DEBUG, "hwmon: %s doesn't exist, trying next path", dirpath_tmp );
+                        }
+
+                        strcpy( dirpath_tmp2, dirpath_hwmonX );
+                        strcat( dirpath_tmp2, "/device" );
+                        strcpy( dirpath_tmp, dirpath_tmp2 );
+
+                        if( ( dir2 = opendir( dirpath_tmp ) ) == NULL )
+                        {
+                            if( nwipe_options.verbose )
+                            {
+                                nwipe_log(
+                                    NWIPE_LOG_DEBUG, "hwmon: %s doesn't exist, no more paths to try", dirpath_tmp );
+                            }
+                            continue;
+                        }
+                    }
+                }
+
+                if( dir2 != NULL )
+                {
+                    if( nwipe_options.verbose )
+                    {
+                        nwipe_log( NWIPE_LOG_DEBUG, "hwmon: Found %s", dirpath_tmp );
+                    }
+
+                    /* Read the device name */
+                    while( ( dp2 = readdir( dir2 ) ) != NULL )
+                    {
+                        if( nwipe_options.verbose )
+                        {
+                            nwipe_log( NWIPE_LOG_DEBUG, "hwmon: dirpath_tmp=%s/%s", dirpath_tmp, &dp2->d_name[0] );
+                        }
+
+                        /* Skip the '.' and '..' directories */
+                        if( dp2->d_name[0] == '.' )
+                        {
+                            continue;
+                        }
+                        strcpy( device, dp2->d_name );
+
+                        /* Create a copy of the device name from the context but strip the path from it, right justify
+                         * device name, prefix with spaces so length is 8. */
+                        nwipe_strip_path( device_context_name, c->device_name );
+
+                        /* Remove leading/training whitespace from a string and left justify result */
+                        trim( device_context_name );
+
+                        /* Does the hwmon device match the device for this drive context */
+                        if( strcmp( device, device_context_name ) != 0 )
+                        {
+                            /* No, so try next hwmon device */
+                            continue;
+                        }
+                        else
+                        {
+                            /* Match ! This hwmon device matches this context, so write the hwmonX path to the context
+                             */
+                            nwipe_log( NWIPE_LOG_NOTICE, "hwmon: %s has temperature monitoring", device, dirpath_tmp );
+                            if( nwipe_options.verbose )
+                            {
+                                nwipe_log( NWIPE_LOG_DEBUG, "hwmon: %s found in %s", device, dirpath_tmp );
+                            }
+                            /* Copy the hwmon path to the drive context structure */
+                            strcpy( c->temp1_path, dirpath_hwmonX );
+                        }
+                    }
+                    closedir( dir2 );
+                }
+            }
+        }
+        closedir( dir );
+    }
+
+    return 0;
+}
+
+void nwipe_update_temperature( nwipe_context_t* c )
+{
+    /* For the given drive context obtain the path to it's hwmon temperature settings
+     * and read then write the temperature values back to the context. A numeric ascii to integer conversion is
+     * performed. The temperaures should be updated no more frequently than every 60 seconds
+     */
+
+    char temperature_label[NUMBER_OF_FILES][20] = {
+        "temp1_crit", "temp1_highest", "temp1_input", "temp1_lcrit", "temp1_lowest", "temp1_max", "temp1_min" };
+    int* temperature_pcontext[NUMBER_OF_FILES] = {
+
+        &( c->temp1_crit ),
+        &( c->temp1_highest ),
+        &( c->temp1_input ),
+        &( c->temp1_lcrit ),
+        &( c->temp1_lowest ),
+        &( c->temp1_max ),
+        &( c->temp1_min ) };
+
+    char path[256];
+    char temperature[256];
+    FILE* fptr;
+    int idx;
+    int result;
+
+    for( idx = 0; idx < NUMBER_OF_FILES; idx++ )
+    {
+        /* Construct the full path including filename */
+        strcpy( path, c->temp1_path );
+        strcat( path, "/" );
+        strcat( path, &( temperature_label[idx][0] ) );
+
+        /* Open the file */
+        if( ( fptr = fopen( path, "r" ) ) != NULL )
+        {
+            /* Acquire data until we reach a newline */
+            result = fscanf( fptr, "%[^\n]", temperature );
+
+            /* Convert numeric ascii to binary integer */
+            *( temperature_pcontext[idx] ) = atoi( temperature );
+
+            /* Divide by 1000 to get degrees celcius */
+            *( temperature_pcontext[idx] ) = *( temperature_pcontext[idx] ) / 1000;
+
+            if( nwipe_options.verbose )
+            {
+                nwipe_log( NWIPE_LOG_NOTICE, "hwmon: %s %dC", path, *( temperature_pcontext[idx] ) );
+            }
+
+            fclose( fptr );
+        }
+        else
+        {
+            if( nwipe_options.verbose )
+            {
+                nwipe_log( NWIPE_LOG_NOTICE, "hwmon: Unable to  open %s", path );
+            }
+        }
+    }
+
+    /* Update the time stamp that records when we checked the temperature,
+     * this is used by the GUI to check temperatures periodically, typically
+     * every 60 seconds */
+    c->temp1_time = time( NULL );
+
+    return;
+}