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tree-wide: never use the off_t unless glibc makes us use it

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off_t is a really weird type as it is usually 64bit these days (at least
in sane programs), but could theoretically be 32bit. We don't support
off_t as 32bit builds though, but still constantly deal with safely
converting from off_t to other types and back for no point.

Hence, never use the type anymore. Always use uint64_t instead. This has
various benefits, including that we can expose these values directly as
D-Bus properties, and also that the values parse the same in all cases.
This commit is contained in:
Lennart Poettering
2015-09-10 18:16:18 +02:00
parent f33be31198
commit 59f448cf15
31 changed files with 174 additions and 172 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/basic/copy.c
+8 -8
View File
@@ -29,7 +29,7 @@
#define COPY_BUFFER_SIZE (16*1024)
int copy_bytes(int fdf, int fdt, off_t max_bytes, bool try_reflink) {
int copy_bytes(int fdf, int fdt, uint64_t max_bytes, bool try_reflink) {
bool try_sendfile = true, try_splice = true;
int r;
@@ -37,7 +37,7 @@ int copy_bytes(int fdf, int fdt, off_t max_bytes, bool try_reflink) {
assert(fdt >= 0);
/* Try btrfs reflinks first. */
if (try_reflink && max_bytes == (off_t) -1) {
if (try_reflink && max_bytes == (uint64_t) -1) {
r = btrfs_reflink(fdf, fdt);
if (r >= 0)
return r;
@@ -47,12 +47,12 @@ int copy_bytes(int fdf, int fdt, off_t max_bytes, bool try_reflink) {
size_t m = COPY_BUFFER_SIZE;
ssize_t n;
if (max_bytes != (off_t) -1) {
if (max_bytes != (uint64_t) -1) {
if (max_bytes <= 0)
return -EFBIG;
if ((off_t) m > max_bytes)
if ((uint64_t) m > max_bytes)
m = (size_t) max_bytes;
}
@@ -105,8 +105,8 @@ int copy_bytes(int fdf, int fdt, off_t max_bytes, bool try_reflink) {
}
next:
if (max_bytes != (off_t) -1) {
assert(max_bytes >= n);
if (max_bytes != (uint64_t) -1) {
assert(max_bytes >= (uint64_t) n);
max_bytes -= n;
}
}
@@ -152,7 +152,7 @@ static int fd_copy_regular(int df, const char *from, const struct stat *st, int
if (fdt < 0)
return -errno;
r = copy_bytes(fdf, fdt, (off_t) -1, true);
r = copy_bytes(fdf, fdt, (uint64_t) -1, true);
if (r < 0) {
unlinkat(dt, to, 0);
return r;
@@ -371,7 +371,7 @@ int copy_file_fd(const char *from, int fdt, bool try_reflink) {
if (fdf < 0)
return -errno;
r = copy_bytes(fdf, fdt, (off_t) -1, try_reflink);
r = copy_bytes(fdf, fdt, (uint64_t) -1, try_reflink);
(void) copy_times(fdf, fdt);
(void) copy_xattr(fdf, fdt);