From 11b73134563ce26a6c954f08fbd26bdbecce3ca0 Mon Sep 17 00:00:00 2001
From: rswindell <>
Date: Tue, 7 Nov 2000 11:38:52 +0000
Subject: [PATCH] lock() for Unix now sets the appropriate lock type (shareable
or exclusive) based on how the file was initially opened.
---
src/sbbs3/smbwrap.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/src/sbbs3/smbwrap.c b/src/sbbs3/smbwrap.c
index 2c07771913..a1fdd15247 100644
--- a/src/sbbs3/smbwrap.c
+++ b/src/sbbs3/smbwrap.c
@@ -179,9 +179,16 @@ long SMBCALL filelength(int fd)
/* Sets a lock on a portion of a file */
int SMBCALL lock(int fd, long pos, int len)
{
+ int flags;
struct flock alock;
- alock.l_type = F_WRLCK; // set a write lock to prevent all access
+ if((flags=fcntl(fd,F_GETFL))<0)
+ return -1;
+
+ if(flags==O_RDONLY)
+ alock.l_type = F_RDLCK; // set read lock to prevent writes
+ else
+ alock.l_type = F_WRLCK; // set write lock to prevent all access
alock.l_whence = L_SET; // SEEK_SET
alock.l_start = pos;
alock.l_len = len;
--
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