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We have traditionally used custom printf formatters %Q and %R, where
%Q replaces the argument with a shell-quoted string, and %R replaces
the argument with a sysroot-prefixed shell-quoted string. They are
actually pretty useful, but unfortunately only supported by glibc.
We only used them in about a dozen places in the daemon (much code
having been replaced by OCaml which does not need them).
In every remaining case we were constructing a command using code like
this:
asprintf_nowarn (&cmd,
"cd %Q && find -print0 | %s -0 -o -H %s --quiet", ...);
We can replace this with:
char *cmd;
size_t cmd_size;
fp = open_memstream (&cmd, &cmd_size);
fprintf (fp, "cd ");
shell_quote (dir, fp);
fprintf (fp, " && find -print0 | %s -0 -o -H %s --quiet", ...);
fclose (fp);
This directory contains miscellaneous manual pages which don't fit elsewhere. Most libguestfs documentation is in manual pages. The source for those manual pages are POD files (*.pod), and they are normally located next to the source files they relate to (eg. guestfish documentation is in fish/guestfish.pod). All manual pages are available online at http://libguestfs.org/ The main API documentation is: http://libguestfs.org/guestfs.3.html