src/stage.c

#define _POSIX_C_SOURCE 200809L
#define _NETBSD_SOURCE 1
 
#include <stdio.h>
#include <sys/stat.h>
 
#include "mpx.h"
 
void
cmd_snapshot(int argc, char** argv)
{
	FILE* out;
	struct stat basest;
	struct stat exst;
	dev_t basedev;
	int has_exclude = 0;
	dev_t excldev = 0;
	ino_t exclino = 0;
 
	/* the optional 4th arg is the configured WD (staging area) -- see
	 * fstree.c's walktree for why it needs excluding, only relevant when
	 * it happens to live inside <prefix>. an exclude path that can't be
	 * lstat'd (doesn't exist, e.g. WD not yet created) is simply not
	 * excluded rather than failing the whole snapshot over it. */
	if(argc != 4 && argc != 5)
	{
		badusage(argv[0], "snapshot <prefix> <outfile> [exclude]");
	}
	if(lstat(argv[2], &basest) != 0)
	{
		die("failed reading prefix");
	}
	basedev = basest.st_dev;
	if(argc == 5 && argv[4][0] != '\0' && lstat(argv[4], &exst) == 0)
	{
		has_exclude = 1;
		excldev = exst.st_dev;
		exclino = exst.st_ino;
	}
	out = fopen(argv[3], "w");
	if(out == NULL)
	{
		die("failed opening snapshot outfile");
	}
	walktree(argv[2], "", out, basedev, has_exclude, excldev, exclino);
	fclose(out);
}
 
void
cmd_stage(int argc, char** argv)
{
	if(argc != 4)
	{
		badusage(argv[0], "stage <portdir> <dest>");
	}
	if(!pathfits(argv[2], "/pkg.conf") || !pathfits(argv[3], "/pkg.conf"))
	{
		die("path too long");
	}
	copytree(argv[2], argv[3]);
}
 
void
cmd_unstage(int argc, char** argv)
{
	if(argc != 3)
	{
		badusage(argv[0], "unstage <dest>");
	}
	rmtree(argv[2]);
}