Commit Graph

3 Commits

Author SHA1 Message Date
Eric Blake
cc5e2a849c command: improve behavior on no output
Guarantee that outbuf/errbuf are allocated on success, even if to the
empty string.  Caller always has to free the result, and empty output
check requires checking if *outbuf=='\0'.  Makes the API easier to use
safely.  Failure is best effort allocation (some paths, like
out-of-memory, cannot allocate a buffer, but most do), so caller must
free buffer on failure.

* docs/internals/command.html.in: Update documentation.
* src/util/command.c (virCommandSetOutputBuffer)
(virCommandSetErrorBuffer, virCommandProcessIO) Guarantee empty
string on no output.
* tests/commandtest.c (test17): New test.
2010-12-07 15:35:30 -07:00
Eric Blake
ee11729d7f command: enforce fd vs. buffer considerations
* docs/internals/command.html.in: Better documentation of buffer
vs. fd considerations.
* src/util/command.c (virCommandRunAsync): Reject raw execution
with string io.
(virCommandRun): Reject execution with user-specified fds not
visiting a regular file.
2010-12-07 15:30:24 -07:00
Daniel P. Berrange
a317c50a04 virCommand: docs for usage of new command APIs
* docs/internals/command.html.in: New file.
* docs/Makefile.am: Build new docs.
* docs/subsite.xsl: New glue file.
* docs/internals.html.in, docs/sitemap.html.in: Update glue.
2010-12-02 16:00:47 -07:00