Adding upstream version 2.39.3.upstream/2.39.3

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

1 files changed, 118 insertions, 0 deletions

diff --git a/include/fileutils.h b/include/fileutils.h
new file mode 100644
index 0000000..538eab0
--- /dev/null
+++ b/include/fileutils.h
@@ -0,0 +1,118 @@
+/*
+ * No copyright is claimed.  This code is in the public domain; do with
+ * it what you wish.
+ **/
+#ifndef UTIL_LINUX_FILEUTILS
+#define UTIL_LINUX_FILEUTILS
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <dirent.h>
+#include <sys/stat.h>
+
+#include "c.h"
+
+extern int mkstemp_cloexec(char *template);
+
+extern int xmkstemp(char **tmpname, const char *dir, const char *prefix);
+
+static inline FILE *xfmkstemp(char **tmpname, const char *dir, const char *prefix)
+{
+	int fd;
+	FILE *ret;
+
+	fd = xmkstemp(tmpname, dir, prefix);
+	if (fd == -1)
+		return NULL;
+
+	if (!(ret = fdopen(fd, "w+" UL_CLOEXECSTR))) {
+		close(fd);
+		return NULL;
+	}
+	return ret;
+}
+
+#ifdef HAVE_OPENAT
+static inline FILE *fopen_at(int dir, const char *filename,
+                             int flags, const char *mode)
+{
+	int fd = openat(dir, filename, flags);
+	FILE *ret;
+
+	if (fd < 0)
+		return NULL;
+
+	ret = fdopen(fd, mode);
+	if (!ret)
+		close(fd);
+	return ret;
+}
+#endif
+
+static inline int is_same_inode(const int fd, const struct stat *st)
+{
+	struct stat f;
+
+	if (fstat(fd, &f) < 0)
+		return 0;
+	else if (f.st_dev != st->st_dev || f.st_ino != st->st_ino)
+		return 0;
+	return 1;
+}
+
+extern int dup_fd_cloexec(int oldfd, int lowfd);
+extern unsigned int get_fd_tabsize(void);
+
+extern int ul_mkdir_p(const char *path, mode_t mode);
+extern char *stripoff_last_component(char *path);
+
+/* This is readdir()-like function, but skips "." and ".." directory entries */
+static inline struct dirent *xreaddir(DIR *dp)
+{
+	struct dirent *d;
+
+	while ((d = readdir(dp))) {
+		if (!strcmp(d->d_name, ".") ||
+		    !strcmp(d->d_name, ".."))
+			continue;
+		break;
+	}
+	return d;
+}
+
+
+#ifdef HAVE_SYS_SYSCALL_H
+# include <sys/syscall.h>
+
+# if !defined(HAVE_CLOSE_RANGE) && defined(SYS_close_range)
+#  include <sys/types.h>
+static inline int close_range(unsigned int first, unsigned int last, int flags)
+{
+	return syscall(SYS_close_range, first, last, flags);
+}
+#  define HAVE_CLOSE_RANGE 1
+# endif	/* SYS_close_range */
+
+# if !defined(HAVE_STATX) && defined(HAVE_STRUCT_STATX) && defined(SYS_statx)
+static inline int statx(int fd, const char *restrict path, int flags,
+		    unsigned int mask, struct statx *stx)
+{
+	return syscall(SYS_statx, fd, path, flags, mask, stx);
+}
+#  define HAVE_STATX 1
+# endif /* SYS_statx */
+
+#endif	/* HAVE_SYS_SYSCALL_H */
+
+
+extern void ul_close_all_fds(unsigned int first, unsigned int last);
+
+#define UL_COPY_READ_ERROR (-1)
+#define UL_COPY_WRITE_ERROR (-2)
+int ul_copy_file(int from, int to);
+
+
+extern int ul_reopen(int fd, int flags);
+
+#endif /* UTIL_LINUX_FILEUTILS */