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| author | Richard W.M. Jones <rjones@redhat.com> | 2009-04-23 18:52:06 +0100 |
|---|---|---|
| committer | Richard W.M. Jones <rjones@redhat.com> | 2009-04-23 18:52:06 +0100 |
| commit | e2870fb94cbd22affecdd16e8f75f75e78d1c18b (patch) | |
| tree | 173989306172b94820aa18c2e13bcb0a7aadbdfa | |
| parent | 6eaa49faddeef5ec086ad7c58e0cd591fb4400dc (diff) | |
| download | libguestfs-e2870fb94cbd22affecdd16e8f75f75e78d1c18b.tar.gz libguestfs-e2870fb94cbd22affecdd16e8f75f75e78d1c18b.tar.xz libguestfs-e2870fb94cbd22affecdd16e8f75f75e78d1c18b.zip | |
Implement extensible strings with catprintf.
| -rw-r--r-- | daemon/daemon.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/daemon/daemon.h b/daemon/daemon.h index 3f51056a..331fc0df 100644 --- a/daemon/daemon.h +++ b/daemon/daemon.h @@ -92,6 +92,14 @@ extern void send_file_end (int cancel); /* only call this if there is a FileOut parameter */ extern void reply (xdrproc_t xdrp, char *ret); +/* Append to existing string. If existing string is NULL then + * this creates a new string. This uses an "interesting" variation + * of asprintf. + */ + +#define catprintf(strp,fs,...) \ + asprintf ((strp), "%s" fs, *(strp) ? *(strp) : "", __VA_ARGS__) + /* Helper for functions that need a root filesystem mounted. * NB. Cannot be used for FileIn functions. */ |