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-rw-r--r--miscutils/readahead.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/miscutils/readahead.c b/miscutils/readahead.c
index 7b375cfff..fb71ce85f 100644
--- a/miscutils/readahead.c
+++ b/miscutils/readahead.c
@@ -22,9 +22,16 @@ int readahead_main(int argc, char **argv)
while (*++argv) {
int fd = open_or_warn(*argv, O_RDONLY);
if (fd >= 0) {
- int r = readahead(fd, 0, fdlength(fd));
+ off_t len;
+ int r;
+
+ /* fdlength was reported to be unreliable - use seek */
+ len = xlseek(fd, 0, SEEK_END);
+ xlseek(fd, 0, SEEK_SET);
+ r = readahead(fd, 0, len);
close(fd);
- if (r >= 0) continue;
+ if (r >= 0)
+ continue;
}
retval = EXIT_FAILURE;
}