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Add copy_file_range(2) support for FreeBSD and Linux #2

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Add copy_file_range(2) support for FreeBSD and Linux #2

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45 changes: 45 additions & 0 deletions src/cpdup.c
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,9 @@
#include "cpdup.h"
#include "hclink.h"
#include "hcproto.h"
#if defined(__FreeBSD__)
#include <sys/param.h>
#endif

#define HSIZE 8192
#define HMASK (HSIZE-1)
Expand Down Expand Up @@ -177,6 +180,14 @@ int64_t CountLinkedItems;
static struct HostConf SrcHost;
static struct HostConf DstHost;

#if defined(USE_COPY_FILE_RANGE) || (defined(__FreeBSD__) && __FreeBSD_version > 1300037)
static inline int
chk_ENOTSUP(int err)
{
return err == EOPNOTSUPP || (ENOTSUP != EOPNOTSUPP && err == ENOTSUP);
}
#endif

int
main(int ac, char **av)
{
Expand Down Expand Up @@ -1131,7 +1142,38 @@ DoCopy(copy_info_t info, struct stat *stat1, int depth)
const char *op;
char *iobuf1 = malloc(GETIOSIZE);
int n;
#if defined(USE_COPY_FILE_RANGE) || (defined(__FreeBSD__) && __FreeBSD_version > 1300037)
int do_std_copy = 0;

/*
* For local file transfers try copy_file_range(2)
*/
if (SrcHost.host == NULL && DstHost.host == NULL) {
ssize_t wcnt;
do {
wcnt = copy_file_range(fd1, NULL, fd2, NULL,
SSIZE_MAX, 0);
} while (wcnt > 0);
if (wcnt < 0) {
/*
* On selected errnos we retry with standard copy
*/
if (errno == EINVAL || errno == EBADF ||
errno == ENOSYS || errno == EXDEV ||
errno == ETXTBSY || chk_ENOTSUP(errno))
do_std_copy = 1;
else
n = -1;
} else
n = 0;
} else
do_std_copy = 1;

/*
* Do standard copy if remote or copy_file_range(2) has failed
*/
if (do_std_copy) {
#endif
/*
* Matt: What about holes?
*/
Expand All @@ -1142,6 +1184,9 @@ DoCopy(copy_info_t info, struct stat *stat1, int depth)
break;
op = "read";
}
#if defined(USE_COPY_FILE_RANGE) || (defined(__FreeBSD__) && __FreeBSD_version > 1300037)
}
#endif
hc_close(&DstHost, fd2);
if (n == 0) {
struct timeval tv[2];
Expand Down