1 files changed, 127 insertions, 0 deletions
diff --git a/src/util/fsspace.c b/src/util/fsspace.c
new file mode 100644
index 0000000..50a4aa7
--- /dev/null
+++ b/src/util/fsspace.c
@@ -0,0 +1,127 @@
+/*++
+/* NAME
+/*	fsspace 3
+/* SUMMARY
+/*	determine available file system space
+/* SYNOPSIS
+/*	#include <fsspace.h>
+/*
+/*	struct fsspace {
+/* .in +4
+/*		unsigned long block_size;
+/*		unsigned long block_free;
+/* .in -4
+/*	};
+/*
+/*	void	fsspace(path, sp)
+/*	const char *path;
+/*	struct fsspace *sp;
+/* DESCRIPTION
+/*	fsspace() returns the amount of available space in the file
+/*	system specified in \fIpath\fR, in terms of the block size and
+/*	of the number of available blocks.
+/* DIAGNOSTICS
+/*	All errors are fatal.
+/* BUGS
+/*	Use caution when doing computations with the result from fsspace().
+/*	It is easy to cause overflow (by multiplying large numbers) or to
+/*	cause underflow (by subtracting unsigned numbers).
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+
+#if defined(STATFS_IN_SYS_MOUNT_H)
+#include <sys/param.h>
+#include <sys/mount.h>
+#elif defined(STATFS_IN_SYS_VFS_H)
+#include <sys/vfs.h>
+#elif defined(STATVFS_IN_SYS_STATVFS_H)
+#include <sys/statvfs.h>
+#elif defined(STATFS_IN_SYS_STATFS_H)
+#include <sys/statfs.h>
+#else
+#ifdef USE_STATFS
+#error "please specify the include file with `struct statfs'"
+#else
+#error "please specify the include file with `struct statvfs'"
+#endif
+#endif
+
+/* Utility library. */
+
+#include <msg.h>
+#include <fsspace.h>
+
+/* fsspace - find amount of available file system space */
+
+void    fsspace(const char *path, struct fsspace * sp)
+{
+    const char *myname = "fsspace";
+
+#ifdef USE_STATFS
+#ifdef USE_STRUCT_FS_DATA			/* Ultrix */
+    struct fs_data fsbuf;
+
+    if (statfs(path, &fsbuf) < 0)
+	msg_fatal("statfs %s: %m", path);
+    sp->block_size = 1024;
+    sp->block_free = fsbuf.fd_bfreen;
+#else
+    struct statfs fsbuf;
+
+    if (statfs(path, &fsbuf) < 0)
+	msg_fatal("statfs %s: %m", path);
+    sp->block_size = fsbuf.f_bsize;
+    sp->block_free = fsbuf.f_bavail;
+#endif
+#endif
+#ifdef USE_STATVFS
+    struct statvfs fsbuf;
+
+    if (statvfs(path, &fsbuf) < 0)
+	msg_fatal("statvfs %s: %m", path);
+    sp->block_size = fsbuf.f_frsize;
+    sp->block_free = fsbuf.f_bavail;
+#endif
+    if (msg_verbose)
+	msg_info("%s: %s: block size %lu, blocks free %lu",
+		 myname, path, sp->block_size, sp->block_free);
+}
+
+#ifdef TEST
+
+ /*
+  * Proof-of-concept test program: print free space unit and count for all
+  * listed file systems.
+  */
+
+#include <vstream.h>
+
+int     main(int argc, char **argv)
+{
+    struct fsspace sp;
+
+    if (argc == 1)
+	msg_fatal("usage: %s filesystem...", argv[0]);
+
+    while (--argc && *++argv) {
+	fsspace(*argv, &sp);
+	vstream_printf("%10s: block size %lu, blocks free %lu\n",
+		       *argv, sp.block_size, sp.block_free);
+	vstream_fflush(VSTREAM_OUT);
+    }
+    return (0);
+}
+
+#endif