diff options
author | Benny Baumann <BenBE@geshi.org> | 2020-11-11 22:15:35 +0100 |
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committer | Benny Baumann <BenBE@geshi.org> | 2020-11-14 15:51:26 +0100 |
commit | 18763051a2c5a5d3a39bfabc284b3d72b1f6fc9b (patch) | |
tree | 6674c47d7b011aca855ea72a0b94c7567bc28294 /ProcessLocksScreen.c | |
parent | 2d6da2e52066067e4c82a2e16f73438319e1db81 (diff) |
Split platform dependent parts for file locks screen
Diffstat (limited to 'ProcessLocksScreen.c')
-rw-r--r-- | ProcessLocksScreen.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/ProcessLocksScreen.c b/ProcessLocksScreen.c new file mode 100644 index 00000000..480afccb --- /dev/null +++ b/ProcessLocksScreen.c @@ -0,0 +1,114 @@ +/* +htop - ProcessLocksScreen.c +(C) 2020 htop dev team +Released under the GNU GPLv2, see the COPYING file +in the source distribution for its full text. +*/ + +#include "config.h" // IWYU pragma: keep + +#include "ProcessLocksScreen.h" + +#include <dirent.h> +#include <fcntl.h> +#include <inttypes.h> +#include <limits.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <sys/wait.h> + +#include "CRT.h" +#include "Compat.h" +#include "FunctionBar.h" +#include "IncSet.h" +#include "Platform.h" +#include "ProcessList.h" +#include "XUtils.h" + + +ProcessLocksScreen* ProcessLocksScreen_new(const Process* process) { + ProcessLocksScreen* this = xMalloc(sizeof(ProcessLocksScreen)); + Object_setClass(this, Class(ProcessLocksScreen)); + if (Process_isThread(process)) + this->pid = process->tgid; + else + this->pid = process->pid; + return (ProcessLocksScreen*) InfoScreen_init(&this->super, process, NULL, LINES-3, " ID TYPE EXCLUSION READ/WRITE DEVICE:INODE START END FILENAME"); +} + +void ProcessLocksScreen_delete(Object* this) { + free(InfoScreen_done((InfoScreen*)this)); +} + +static void ProcessLocksScreen_draw(InfoScreen* this) { + InfoScreen_drawTitled(this, "Snapshot of file locks of process %d - %s", ((ProcessLocksScreen*)this)->pid, this->process->comm); +} + +static inline void FileLocks_Data_clear(FileLocks_Data* data) { + for (size_t i = 0; i < ARRAYSIZE(data->data); i++) + free(data->data[i]); +} + +static void ProcessLocksScreen_scan(InfoScreen* this) { + Panel* panel = this->display; + int idx = Panel_getSelectedIndex(panel); + Panel_prune(panel); + FileLocks_ProcessData* pdata = Platform_getProcessLocks(((ProcessLocksScreen*)this)->pid); + if (!pdata) { + InfoScreen_addLine(this, "This feature is not supported on your platform."); + } else if (pdata->error) { + InfoScreen_addLine(this, "Could not determine file locks."); + } else { + FileLocks_LockData* ldata = pdata->locks; + if (!ldata) { + InfoScreen_addLine(this, "No locks have been found for the selected process."); + } + while (ldata) { + FileLocks_Data* data = &ldata->data; + + char entry[512]; + if (ULLONG_MAX == data->end) { + xSnprintf(entry, sizeof(entry), "%10d %-10s %-10s %-10s %02x:%02x:%020"PRIu64" %20"PRIu64" %20s %s", + data->id, + data->data[0], data->data[1], data->data[2], + data->dev[0], data->dev[1], data->inode, + data->start, "<END OF FILE>", + data->data[3] ? data->data[3] : "<N/A>" + ); + } else { + xSnprintf(entry, sizeof(entry), "%10d %-10s %-10s %-10s %02x:%02x:%020"PRIu64" %20"PRIu64" %20"PRIu64" %s", + data->id, + data->data[0], data->data[1], data->data[2], + data->dev[0], data->dev[1], data->inode, + data->start, data->end, + data->data[3] ? data->data[3] : "<N/A>" + ); + } + + InfoScreen_addLine(this, entry); + FileLocks_Data_clear(&ldata->data); + + FileLocks_LockData* old = ldata; + ldata = ldata->next; + free(old); + } + } + free(pdata); + Vector_insertionSort(this->lines); + Vector_insertionSort(panel->items); + Panel_setSelected(panel, idx); +} + +const InfoScreenClass ProcessLocksScreen_class = { + .super = { + .extends = Class(Object), + .delete = ProcessLocksScreen_delete + }, + .scan = ProcessLocksScreen_scan, + .draw = ProcessLocksScreen_draw +}; |