[thirdparty/git.git] / copy.c

#include "cache.h"

int copy_fd(int ifd, int ofd)
{
	while (1) {
		char buffer[8192];
		char *buf = buffer;
		ssize_t len = xread(ifd, buffer, sizeof(buffer));
		if (!len)
			break;
		if (len < 0) {
			int read_error;
			read_error = errno;
			close(ifd);
			return error("copy-fd: read returned %s",
				     strerror(read_error));
		}
		while (len) {
			int written = xwrite(ofd, buf, len);
			if (written > 0) {
				buf += written;
				len -= written;
			}
			else if (!written) {
				close(ifd);
				return error("copy-fd: write returned 0");
			} else {
				close(ifd);
				return error("copy-fd: write returned %s",
					     strerror(errno));
			}
		}
	}
	close(ifd);
	return 0;
}
Commit	Line	Data
f3123c4a JH	1	#include "cache.h"
	2
	3	int copy_fd(int ifd, int ofd)
	4	{
	5	while (1) {
f3123c4a JH	6	char buffer[8192];
f3123c4a JH	7	char *buf = buffer;
8a912bcb	8	ssize_t len = xread(ifd, buffer, sizeof(buffer));
f3123c4a JH	9	if (!len)
	10	break;
	11	if (len < 0) {
e6c64fc1	12	int read_error;
e6c64fc1 JH	13	read_error = errno;
e6c64fc1 JH	14	close(ifd);
f3123c4a	15	return error("copy-fd: read returned %s",
e6c64fc1	16	strerror(read_error));
f3123c4a	17	}
1c15afb9 JH	18	while (len) {
1c15afb9 JH	19	int written = xwrite(ofd, buf, len);
f3123c4a JH	20	if (written > 0) {
	21	buf += written;
	22	len -= written;
f3123c4a	23	}
08337a97 SR	24	else if (!written) {
08337a97 SR	25	close(ifd);
f3123c4a	26	return error("copy-fd: write returned 0");
08337a97 SR	27	} else {
08337a97 SR	28	close(ifd);
1c15afb9 JH	29	return error("copy-fd: write returned %s",
1c15afb9 JH	30	strerror(errno));
08337a97	31	}
f3123c4a JH	32	}
	33	}
	34	close(ifd);
	35	return 0;
	36	}
	37