--- /dev/null
+/*
+ * lsfd(1) - list file descriptors
+ *
+ * Copyright (C) 2021-2026 Red Hat, Inc. All rights reserved.
+ * Written by Masatake YAMATO <yamato@redhat.com>
+ *
+ * Very generally based on lsof(8) by Victor A. Abell <abe@purdue.edu>
+ * It supports multiple OSes. lsfd specializes to Linux.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would 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 02111-1307 USA
+ */
+
+#include "lsfd.h"
+
+/*
+ * Error classes
+ */
+
+/* get_errno_name() --- the private replacement of strerrorname_np(3).
+ * Some platforms don't have strerrorname_np.
+ *
+ * Mainly copied from misc-utils/enosys.c.
+ */
+struct errno_s {
+ const char *const name;
+ long number;
+};
+
+static const struct errno_s errnos[] = {
+#define UL_ERRNO(name, nr) { name, nr },
+#include "errnos.h"
+#undef UL_ERRNO
+};
+
+static const char *get_errno_name(int ern)
+{
+ for (size_t i = 0; i < ARRAY_SIZE(errnos); i ++) {
+ if (errnos[i].number == ern)
+ return errnos[i].name;
+ }
+ return NULL;
+}
+
+static bool error_fill_column(struct proc *proc __attribute__((__unused__)),
+ struct file *file,
+ struct libscols_line *ln,
+ int column_id,
+ size_t column_index)
+{
+ char *str = NULL;
+ const char *ename;
+
+ switch(column_id) {
+ case COL_TYPE:
+ if (scols_line_set_data(ln, column_index, "ERROR"))
+ err(EXIT_FAILURE, _("failed to add output data"));
+ return true;
+ case COL_SOURCE:
+ ename = get_errno_name(file->error.number);
+ if (ename)
+ xasprintf(&str, "%s:%s",
+ file->error.syscall, ename);
+ else
+ xasprintf(&str, "%s:unknown(%d)",
+ file->error.syscall, file->error.number);
+ if (scols_line_refer_data(ln, column_index, str))
+ err(EXIT_FAILURE, _("failed to add output data"));
+ return true;
+ default:
+ return false;
+ }
+}
+
+static void error_file_free_content(struct file *file)
+{
+ free(file->name); /* NULL is acceptable. */
+}
+
+static const struct file_class error_class = {
+ .super = &abst_class,
+ .size = sizeof(struct file),
+ .free_content = error_file_free_content,
+ .fill_column = error_fill_column,
+};
+
+static bool readlink_error_fill_column(struct proc *proc __attribute__((__unused__)),
+ struct file *file __attribute__((__unused__)),
+ struct libscols_line *ln __attribute__((__unused__)),
+ int column_id,
+ size_t column_index __attribute__((__unused__)))
+{
+ switch(column_id) {
+ case COL_NAME:
+ case COL_KNAME:
+ return true;
+ default:
+ return false;
+ }
+}
+
+const struct file_class readlink_error_class = {
+ .super = &error_class,
+ .size = sizeof(struct file),
+ .fill_column = readlink_error_fill_column,
+};
+
+const struct file_class stat_error_class = {
+ .super = &error_class,
+ .size = sizeof(struct file),
+};
+
+bool is_error_object(struct file *f)
+{
+ const struct file_class *c;
+
+ assert(f);
+ c = f->class;
+
+ while (c) {
+ if (c == &error_class)
+ return true;
+ c = c->super;
+ }
+
+ return false;
+}
.fill_column = abst_fill_column,
};
-/*
- * Error classes
- */
-
-/* get_errno_name() --- the private replacement of strerrorname_np(3).
- * Some platforms don't have strerrorname_np.
- *
- * Mainly copied from misc-utils/enosys.c.
- */
-struct errno_s {
- const char *const name;
- long number;
-};
-
-static const struct errno_s errnos[] = {
-#define UL_ERRNO(name, nr) { name, nr },
-#include "errnos.h"
-#undef UL_ERRNO
-};
-
-static const char *get_errno_name(int ern)
-{
- for (size_t i = 0; i < ARRAY_SIZE(errnos); i ++) {
- if (errnos[i].number == ern)
- return errnos[i].name;
- }
- return NULL;
-}
-
-static bool error_fill_column(struct proc *proc __attribute__((__unused__)),
- struct file *file,
- struct libscols_line *ln,
- int column_id,
- size_t column_index)
-{
- char *str = NULL;
- const char *ename;
-
- switch(column_id) {
- case COL_TYPE:
- if (scols_line_set_data(ln, column_index, "ERROR"))
- err(EXIT_FAILURE, _("failed to add output data"));
- return true;
- case COL_SOURCE:
- ename = get_errno_name(file->error.number);
- if (ename)
- xasprintf(&str, "%s:%s",
- file->error.syscall, ename);
- else
- xasprintf(&str, "%s:unknown(%d)",
- file->error.syscall, file->error.number);
- if (scols_line_refer_data(ln, column_index, str))
- err(EXIT_FAILURE, _("failed to add output data"));
- return true;
- default:
- return false;
- }
-}
-
-static void error_file_free_content(struct file *file)
-{
- free(file->name); /* NULL is acceptable. */
-}
-
-static const struct file_class error_class = {
- .super = &abst_class,
- .size = sizeof(struct file),
- .free_content = error_file_free_content,
- .fill_column = error_fill_column,
-};
-
-static bool readlink_error_fill_column(struct proc *proc __attribute__((__unused__)),
- struct file *file __attribute__((__unused__)),
- struct libscols_line *ln __attribute__((__unused__)),
- int column_id,
- size_t column_index __attribute__((__unused__)))
-{
- switch(column_id) {
- case COL_NAME:
- case COL_KNAME:
- return true;
- default:
- return false;
- }
-}
-
-const struct file_class readlink_error_class = {
- .super = &error_class,
- .size = sizeof(struct file),
- .fill_column = readlink_error_fill_column,
-};
-
-const struct file_class stat_error_class = {
- .super = &error_class,
- .size = sizeof(struct file),
-};
-
-bool is_error_object(struct file *f)
-{
- const struct file_class *c;
-
- assert(f);
- c = f->class;
-
- while (c) {
- if (c == &error_class)
- return true;
- c = c->super;
- }
-
- return false;
-}
-
/*
* Concrete file class
*/
projects / thirdparty / util-linux.git / commitdiff
