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5bf7f770b6
The man page for getline says: ssize_t getline(char **lineptr, size_t *n, FILE *stream); [...] If *lineptr is set to NULL and *n is set 0 before the call, then get‐ line() will allocate a buffer for storing the line. This buffer should be freed by the user program even if getline() failed. which seems to indicate that we must initialize both line and len to 0 before the first call to getline. In several places we were not initializing len. The program still worked fine, but it seems better to initialize the length anyway.
This is the third rewrite of the virt-df program. It very much
follows the outline of the Perl program which this replaced in
libguestfs 1.7.14.
main.c - main program
domains.c - dealing with libvirt, only used if libvirt is around
at compile time
df.c - getting the stats from libguestfs
output.c - writing the output, CSV output
virt-df.h - header file
Note this also uses the shared options parsing code in
'fish/options.[ch]'.