1 files changed, 78 insertions, 0 deletions
diff --git a/src/basic/fileio.h b/src/basic/fileio.h
new file mode 100644
index 0000000..53e3f4e
--- /dev/null
+++ b/src/basic/fileio.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <dirent.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <sys/types.h>
+
+#include "macro.h"
+#include "time-util.h"
+
+#define LONG_LINE_MAX (1U*1024U*1024U)
+
+typedef enum {
+        WRITE_STRING_FILE_CREATE            = 1 << 0,
+        WRITE_STRING_FILE_ATOMIC            = 1 << 1,
+        WRITE_STRING_FILE_AVOID_NEWLINE     = 1 << 2,
+        WRITE_STRING_FILE_VERIFY_ON_FAILURE = 1 << 3,
+        WRITE_STRING_FILE_SYNC              = 1 << 4,
+        WRITE_STRING_FILE_DISABLE_BUFFER    = 1 << 5,
+        WRITE_STRING_FILE_NOFOLLOW          = 1 << 6,
+
+        /* And before you wonder, why write_string_file_atomic_label_ts() is a separate function instead of just one
+           more flag here: it's about linking: we don't want to pull -lselinux into all users of write_string_file()
+           and friends. */
+
+} WriteStringFileFlags;
+
+int write_string_stream_ts(FILE *f, const char *line, WriteStringFileFlags flags, struct timespec *ts);
+static inline int write_string_stream(FILE *f, const char *line, WriteStringFileFlags flags) {
+        return write_string_stream_ts(f, line, flags, NULL);
+}
+int write_string_file_ts(const char *fn, const char *line, WriteStringFileFlags flags, struct timespec *ts);
+static inline int write_string_file(const char *fn, const char *line, WriteStringFileFlags flags) {
+        return write_string_file_ts(fn, line, flags, NULL);
+}
+
+int write_string_filef(const char *fn, WriteStringFileFlags flags, const char *format, ...) _printf_(3, 4);
+
+int read_one_line_file(const char *fn, char **line);
+int read_full_file(const char *fn, char **contents, size_t *size);
+int read_full_stream(FILE *f, char **contents, size_t *size);
+
+int verify_file(const char *fn, const char *blob, bool accept_extra_nl);
+
+int executable_is_script(const char *path, char **interpreter);
+
+int get_proc_field(const char *filename, const char *pattern, const char *terminator, char **field);
+
+DIR *xopendirat(int dirfd, const char *name, int flags);
+
+int search_and_fopen(const char *path, const char *mode, const char *root, const char **search, FILE **_f);
+int search_and_fopen_nulstr(const char *path, const char *mode, const char *root, const char *search, FILE **_f);
+
+int fflush_and_check(FILE *f);
+int fflush_sync_and_check(FILE *f);
+
+int write_timestamp_file_atomic(const char *fn, usec_t n);
+int read_timestamp_file(const char *fn, usec_t *ret);
+
+int fputs_with_space(FILE *f, const char *s, const char *separator, bool *space);
+
+typedef enum ReadLineFlags {
+        READ_LINE_ONLY_NUL = 1 << 0,
+} ReadLineFlags;
+
+int read_line_full(FILE *f, size_t limit, ReadLineFlags flags, char **ret);
+
+static inline int read_line(FILE *f, size_t limit, char **ret) {
+        return read_line_full(f, limit, 0, ret);
+}
+
+static inline int read_nul_string(FILE *f, size_t limit, char **ret) {
+        return read_line_full(f, limit, READ_LINE_ONLY_NUL, ret);
+}
+
+int safe_fgetc(FILE *f, char *ret);