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authorRichard Purdie <richard.purdie@linuxfoundation.org>2011-02-10 11:50:16 +0000
committerRichard Purdie <richard.purdie@linuxfoundation.org>2011-02-10 11:51:48 +0000
commit296866c38e1b88df42d66bdc32cfed2d5212914c (patch)
treef56631b4a7ed520ad4c7198c14a8746cc30cd01b /scripts/swabber-strace-attach
parentd3d236b2bf2784d7454dcb7fce595b6aac6967cd (diff)
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image-swab: Convert to attach strace to the process to obtain the required swabber data
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'scripts/swabber-strace-attach')
-rwxr-xr-xscripts/swabber-strace-attach30
1 files changed, 30 insertions, 0 deletions
diff --git a/scripts/swabber-strace-attach b/scripts/swabber-strace-attach
new file mode 100755
index 000000000..d4f80e4e9
--- /dev/null
+++ b/scripts/swabber-strace-attach
@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+import os
+import sys
+
+# Detach from the controlling terminal and parent process by forking twice to daemonize ourselves,
+# then run the command passed as argv[1]. Send log data to argv[2].
+
+pid = os.fork()
+if (pid == 0):
+ os.setsid()
+ pid = os.fork()
+ if (pid != 0):
+ os._exit(0)
+else:
+ sys.exit()
+
+
+si = file(os.devnull, 'r')
+so = file(sys.argv[2], 'w')
+se = so
+
+# Replace those fds with our own
+os.dup2(si.fileno(), sys.stdin.fileno())
+os.dup2(so.fileno(), sys.stdout.fileno())
+os.dup2(se.fileno(), sys.stderr.fileno())
+
+ret = os.system(sys.argv[1])
+
+os._exit(ret)
+