[libvirt] [sandbox PATCH 1/2] builder: Use prefix '=> /' to identify lib path

[Radostin Stoyanov]

The output of ldd might contain a fully qualified path on the left
hand side of the '=>'. For example:

(glibc 2.28)
$ ldd /usr/libexec/libvirt-sandbox-init-common  | grep ld
    /lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x00007fcdceb96000)

(glibc 2.27)
$ ldd /usr/libexec/libvirt-sandbox-init-common | grep ld
    /lib64/ld-linux-x86-64.so.2 (0x00007f18135eb000)

Signed-off-by: Radostin Stoyanov <rstoyanov1 at gmail.com>
---
 libvirt-sandbox/libvirt-sandbox-builder.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/libvirt-sandbox/libvirt-sandbox-builder.c b/libvirt-sandbox/libvirt-sandbox-builder.c
index 8cfc2f4..7058112 100644
--- a/libvirt-sandbox/libvirt-sandbox-builder.c
+++ b/libvirt-sandbox/libvirt-sandbox-builder.c
@@ -297,7 +297,7 @@ static gboolean gvir_sandbox_builder_copy_program(const char *program,
     /* Loop over the output lines to get the path to the libraries to copy */
     line = out;
     while ((tmp = strchr(line, '\n'))) {
-        gchar *start, *end;
+        gchar *start, *end, *tmp2;
         *tmp = '\0';
 
         /* Search the line for the library path */
@@ -308,22 +308,20 @@ static gboolean gvir_sandbox_builder_copy_program(const char *program,
             const gchar *newname = NULL;
             *end = '\0';
 
+            if ((tmp2 = strstr(start, "=> ")))
+                start = tmp2 + 3;
+
             /* There are countless different naming schemes for
              * the ld-linux.so library across architectures. Pretty
              * much the only thing in common is they start with
-             * the two letters 'ld'. The LDD program prints it
-             * out differently too - it doesn't include " => "
-             * as this library is special - its actually a static
-             * linked executable not a library.
+             * the two letters 'ld'.
              *
              * To make life easier for libvirt-sandbox-init-{qemu,lxc}
              * we just call the file 'ld.so' when we copy it into our
              * scratch dir, no matter what it was called on the host.
              */
-            if (!strstr(line, " => ") &&
-                strstr(start, "/ld")) {
+            if (strstr(start, "/ld"))
                 newname = "ld.so";
-            }
 
             if (!gvir_sandbox_builder_copy_file(start, dest, newname, error))
                 goto cleanup;
-- 
2.17.1