Roberto Foglietta pointed out that readall() needs fdlength() to restore

the original position before exiting.

diff --git a/lib/lib.c b/lib/lib.c
index 959cd46..d156893 100644 (file)
--- a/lib/lib.c
+++ b/lib/lib.c
@@ -474,7 +474,7 @@ long atolx(char *c)
 // Return how long the file at fd is, if there's any way to determine it.
 off_t fdlength(int fd)
 {
-       off_t bottom = 0, top = 0, pos;
+       off_t bottom = 0, top = 0, pos, old;
        int size;
 
        // If the ioctl works for this, return it.
@@ -485,6 +485,7 @@ off_t fdlength(int fd)
        // block devices don't do BLKGETSIZE right.)  This should probably have
        // a CONFIG option...
 
+       old = lseek(fd, 0, SEEK_CUR);
        do {
                char temp;
 
@@ -506,6 +507,8 @@ off_t fdlength(int fd)
                }
        } while (bottom + 1 != top);
 
+       lseek(fd, old, SEEK_SET);
+
        return pos + 1;
 }