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authorJannis Hoffmann <jannis@fehcom.de>2024-07-09 13:58:20 +0200
committerJannis Hoffmann <jannis@fehcom.de>2024-07-09 13:58:20 +0200
commit249866e3d1e11dc72eaa1305f4bb479ded92ef38 (patch)
tree7118c5f58e29fe61c100e4d067bb90ba8d52589e /src/seek.c
parent96cf8dffe4f7b0b910f790066ae622dc429eb522 (diff)
reorganized file structure
Moved c files into src/. Corrected VERSION file. Removed BUILD and FILES.
Diffstat (limited to 'src/seek.c')
-rw-r--r--src/seek.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/src/seek.c b/src/seek.c
new file mode 100644
index 0000000..ac761a9
--- /dev/null
+++ b/src/seek.c
@@ -0,0 +1,30 @@
+#include <sys/types.h>
+#include "seek.h"
+
+/**
+ @file seek.c
+ @author djb
+ @source qmail
+ @brief seek in an open file descritor
+*/
+
+off_t lseek(int fd,off_t offset,int whence);
+int ftruncate(int fd, off_t length);
+
+#define CUR 1 /* sigh */
+
+seek_pos seek_cur(int fd)
+{ return lseek(fd,(off_t) 0,CUR); }
+
+#define END 2 /* sigh */
+
+int seek_end(int fd)
+{ if (lseek(fd,(off_t) 0,END) == -1) return -1; return 0; }
+
+#define SET 0 /* sigh */
+
+int seek_set(int fd,seek_pos pos)
+{ if (lseek(fd,(off_t) pos,SET) == -1) return -1; return 0; }
+
+int seek_trunc(int fd,seek_pos pos)
+{ return ftruncate(fd,(off_t) pos); }