From 8177a9d79c0e942dcac3312f15585d0344d505a5 Mon Sep 17 00:00:00 2001 From: Al Viro <viro@ZenIV.linux.org.uk> Date: Sun, 16 Jun 2013 18:06:06 +0100 Subject: [PATCH] lseek(fd, n, SEEK_END) does *not* go to eof - n When you copy some code, you are supposed to read it. If nothing else, there's a chance to spot and fix an obvious bug instead of sharing it... X-Song: "I Got It From Agnes", by Tom Lehrer Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> [ Tom Lehrer? You're dating yourself, Al ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- drivers/net/ethernet/brocade/bna/bnad_debugfs.c | 2 +- drivers/scsi/bfa/bfad_debugfs.c | 2 +- drivers/scsi/fnic/fnic_debugfs.c | 2 +- drivers/scsi/lpfc/lpfc_debugfs.c | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/brocade/bna/bnad_debugfs.c b/drivers/net/ethernet/brocade/bna/bnad_debugfs.c index 6e8bc9d88c41..94d957d203a6 100644 --- a/drivers/net/ethernet/brocade/bna/bnad_debugfs.c +++ b/drivers/net/ethernet/brocade/bna/bnad_debugfs.c @@ -244,7 +244,7 @@ bnad_debugfs_lseek(struct file *file, loff_t offset, int orig) file->f_pos += offset; break; case 2: - file->f_pos = debug->buffer_len - offset; + file->f_pos = debug->buffer_len + offset; break; default: return -EINVAL; diff --git a/drivers/scsi/bfa/bfad_debugfs.c b/drivers/scsi/bfa/bfad_debugfs.c index 439c012be763..b63d534192e3 100644 --- a/drivers/scsi/bfa/bfad_debugfs.c +++ b/drivers/scsi/bfa/bfad_debugfs.c @@ -186,7 +186,7 @@ bfad_debugfs_lseek(struct file *file, loff_t offset, int orig) file->f_pos += offset; break; case 2: - file->f_pos = debug->buffer_len - offset; + file->f_pos = debug->buffer_len + offset; break; default: return -EINVAL; diff --git a/drivers/scsi/fnic/fnic_debugfs.c b/drivers/scsi/fnic/fnic_debugfs.c index adc1f7f471f5..85e1ffd0e5c5 100644 --- a/drivers/scsi/fnic/fnic_debugfs.c +++ b/drivers/scsi/fnic/fnic_debugfs.c @@ -174,7 +174,7 @@ static loff_t fnic_trace_debugfs_lseek(struct file *file, pos = file->f_pos + offset; break; case 2: - pos = fnic_dbg_prt->buffer_len - offset; + pos = fnic_dbg_prt->buffer_len + offset; } return (pos < 0 || pos > fnic_dbg_prt->buffer_len) ? -EINVAL : (file->f_pos = pos); diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c index f63f5ff7f274..f525ecb7a9c6 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -1178,7 +1178,7 @@ lpfc_debugfs_lseek(struct file *file, loff_t off, int whence) pos = file->f_pos + off; break; case 2: - pos = debug->len - off; + pos = debug->len + off; } return (pos < 0 || pos > debug->len) ? -EINVAL : (file->f_pos = pos); } -- 2.34.1