From: Timo Sirainen <tss@iki.fi>
Date: Wed, 6 Aug 2003 19:46:51 +0000 (+0300)
Subject: Added pwrite() compatibility
X-Git-Tag: 1.1.alpha1~4437
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2b101f5d02f61d39793141b9e4449cc36bb0378a;p=thirdparty%2Fdovecot%2Fcore.git

Added pwrite() compatibility

--HG--
branch : HEAD
---

diff --git a/configure.in b/configure.in
index bcebb86db7..8e59543047 100644
--- a/configure.in
+++ b/configure.in
@@ -225,8 +225,8 @@ fi
 
 dnl * after -lsocket and -lnsl tests, inet_aton() may be in them
 AC_CHECK_FUNCS(fcntl flock inet_aton sigaction getpagesize madvise \
-               strcasecmp stricmp vsnprintf vsyslog writev setrlimit \
-	       setproctitle)
+               strcasecmp stricmp vsnprintf vsyslog writev pwrite \
+	       setrlimit setproctitle)
 
 dnl * poll/select?
 
diff --git a/src/lib/compat.c b/src/lib/compat.c
index cc44476e70..38fd4be408 100644
--- a/src/lib/compat.c
+++ b/src/lib/compat.c
@@ -118,3 +118,19 @@ ssize_t my_writev(int fd, const struct iovec *iov, int iov_len)
 	return (ssize_t)written;
 }
 #endif
+
+#ifndef HAVE_PWRITE
+ssize_t pread(int fd, void *buf, size_t count, off_t offset)
+{
+	if (lseek(fd, offset, SEEK_SET) < 0)
+		return -1;
+	return read(fd, buf, count);
+}
+
+ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset)
+{
+	if (lseek(fd, offset, SEEK_SET) < 0)
+		return -1;
+	return write(fd, buf, count);
+}
+#endif
diff --git a/src/lib/compat.h b/src/lib/compat.h
index be531f66cc..7d5800df98 100644
--- a/src/lib/compat.h
+++ b/src/lib/compat.h
@@ -94,6 +94,11 @@ struct iovec;
 ssize_t my_writev(int fd, const struct iovec *iov, int iov_len);
 #endif
 
+#ifndef HAVE_PWRITE
+ssize_t pread(int fd, void *buf, size_t count, off_t offset);
+ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset);
+#endif
+
 /* ctype.h isn't safe with signed chars,
    use our own instead if really needed */
 #define i_toupper(x) ((char) toupper((int) (unsigned char) (x)))