[cowdancer] 07/11: file.c: Preserve permissions on copy

[James Clarke]

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jrtc27-guest pushed a commit to branch master
in repository cowdancer.

commit f91e0cb8c07dd0913be47df2c3e5411f5a582613
Author: James Clarke <jrtc27 at jrtc27.com>
Date:   Mon May 2 00:44:13 2016 +0100

    file.c: Preserve permissions on copy
---
 file.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/file.c b/file.c
index 3e4f55e..b7afebc 100644
--- a/file.c
+++ b/file.c
@@ -36,6 +36,7 @@
 #include <sys/stat.h>
 #include <assert.h>
 #include <alloca.h>
+#include <errno.h>
 #include "file.h"
 
 /**
@@ -51,6 +52,7 @@ int copy_file(const char*orig, const char*dest)
   int fin=-1;
   int fout=-1;
   size_t count;
+  struct stat st;
 
   if (!buf)
     {
@@ -89,6 +91,26 @@ int copy_file(const char*orig, const char*dest)
       perror("file copy: close ");
       goto out;
     }
+
+  if (0>stat(orig, &st))
+    {
+      fprintf(stderr,
+	      "Error calling stat '%s': %s\n",
+	      orig,
+	      strerror(errno));
+      goto out;
+    }
+
+  if (chmod(dest, st.st_mode))
+    {
+      fprintf(stderr,
+	      "Error calling chmod('%s' 0%llo): %s\n",
+	      orig,
+	      (unsigned long long) st.st_mode,
+	      strerror(errno));
+      goto out;
+    }
+
   ret=0;
  out:
   free(buf);

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