[wic][PATCH] wic: Make sure file exists before removing it

[Ed Bartosh <ed.bartosh@linux.intel.com>]

Bunch of os.remove calls were added to the partition.py lately.
They're causing wic to fail with OSError: [Errno 2] No such file or directory
if file doesn't exist.

Added check for file existence to all recently added calls of
os.remove. That should fix this regression.

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
---
 scripts/lib/wic/kickstart/custom_commands/partition.py | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/scripts/lib/wic/kickstart/custom_commands/partition.py b/scripts/lib/wic/kickstart/custom_commands/partition.py
index e864076..d9f77d9 100644
--- a/scripts/lib/wic/kickstart/custom_commands/partition.py
+++ b/scripts/lib/wic/kickstart/custom_commands/partition.py
@@ -230,7 +230,7 @@ class Wic_PartData(Mic_PartData):
         image_rootfs = rootfs_dir
         rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label ,self.fstype)
 
-        os.remove(rootfs)
+        os.path.isfile(rootfs) and os.remove(rootfs)
         du_cmd = "du -ks %s" % image_rootfs
         out = exec_cmd(du_cmd)
         actual_rootfs_size = int(out.split()[0])
@@ -282,7 +282,7 @@ class Wic_PartData(Mic_PartData):
         image_rootfs = rootfs_dir
         rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label, self.fstype)
 
-        os.remove(rootfs)
+        os.path.isfile(rootfs) and os.remove(rootfs)
         du_cmd = "du -ks %s" % image_rootfs
         out = exec_cmd(du_cmd)
         actual_rootfs_size = int(out.split()[0])
@@ -327,7 +327,7 @@ class Wic_PartData(Mic_PartData):
         image_rootfs = rootfs_dir
         rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label, self.fstype)
 
-        os.remove(rootfs)
+        os.path.isfile(rootfs) and os.remove(rootfs)
         du_cmd = "du -bks %s" % image_rootfs
         out = exec_cmd(du_cmd)
         blocks = int(out.split()[0])
@@ -380,7 +380,7 @@ class Wic_PartData(Mic_PartData):
         image_rootfs = rootfs_dir
         rootfs = "%s/rootfs_%s.%s" % (cr_workdir, self.label ,self.fstype)
 
-        os.remove(rootfs)
+        os.path.isfile(rootfs) and os.remove(rootfs)
         squashfs_cmd = "mksquashfs %s %s -noappend" % \
                        (image_rootfs, rootfs)
         exec_native_cmd(pseudo + squashfs_cmd, native_sysroot)
@@ -419,7 +419,7 @@ class Wic_PartData(Mic_PartData):
         """
         fs = "%s/fs_%s.%s" % (cr_workdir, self.label, self.fstype)
 
-        os.remove(fs)
+        os.path.isfile(fs) and os.remove(fs)
         dd_cmd = "dd if=/dev/zero of=%s bs=1k seek=%d count=0" % \
             (fs, self.size)
         exec_cmd(dd_cmd)
@@ -447,7 +447,7 @@ class Wic_PartData(Mic_PartData):
         """
         fs = "%s/fs_%s.%s" % (cr_workdir, self.label, self.fstype)
 
-        os.remove(fs)
+        os.path.isfile(fs) and os.remove(fs)
         dd_cmd = "dd if=/dev/zero of=%s bs=1k seek=%d count=0" % \
             (fs, self.size)
         exec_cmd(dd_cmd)
@@ -472,7 +472,7 @@ class Wic_PartData(Mic_PartData):
         Prepare an empty vfat partition.
         """
         fs = "%s/fs_%s.%s" % (cr_workdir, self.label, self.fstype)
-        os.remove(fs)
+        os.path.isfile(fs) and os.remove(fs)
 
         blocks = self.size
 
@@ -499,7 +499,7 @@ class Wic_PartData(Mic_PartData):
                       "Proceeding as requested." % self.mountpoint)
 
         fs = "%s/fs_%s.%s" % (cr_workdir, self.label, self.fstype)
-        os.remove(fs)
+        os.path.isfile(fs) and os.remove(fs)
 
         # it is not possible to create a squashfs without source data,
         # thus prepare an empty temp dir that is used as source
-- 
2.1.4