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scalar-diagnose: move 'get_disk_info()' to 'compat/'

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Move 'get_disk_info()' function into 'compat/'. Although Scalar-specific
code is generally not part of the main Git tree, 'get_disk_info()' will be
used in subsequent patches by additional callers beyond 'scalar diagnose'.
This patch prepares for that change, at which point this platform-specific
code should be part of 'compat/' as a matter of convention.

The function is copied *mostly* verbatim, with two exceptions:

* '#ifdef WIN32' is replaced with '#ifdef GIT_WINDOWS_NATIVE' to allow
  'statvfs' to be used with Cygwin.
* the 'struct strbuf buf' and 'int res' (as well as their corresponding
  cleanup & return) are moved outside of the '#ifdef' block.

Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Victoria Dye
2022-08-12 20:10:12 +00:00
committed by Junio C Hamano
parent ba307a5046
commit 435a2535b7
3 changed files with 58 additions and 52 deletions
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56
compat/disk.h Normal file
View File

@ -0,0 +1,56 @@
#ifndef COMPAT_DISK_H
#define COMPAT_DISK_H
#include "git-compat-util.h"
static int get_disk_info(struct strbuf *out)
{
struct strbuf buf = STRBUF_INIT;
int res = 0;
#ifdef GIT_WINDOWS_NATIVE
char volume_name[MAX_PATH], fs_name[MAX_PATH];
DWORD serial_number, component_length, flags;
ULARGE_INTEGER avail2caller, total, avail;
strbuf_realpath(&buf, ".", 1);
if (!GetDiskFreeSpaceExA(buf.buf, &avail2caller, &total, &avail)) {
error(_("could not determine free disk size for '%s'"),
buf.buf);
res = -1;
goto cleanup;
}
strbuf_setlen(&buf, offset_1st_component(buf.buf));
if (!GetVolumeInformationA(buf.buf, volume_name, sizeof(volume_name),
&serial_number, &component_length, &flags,
fs_name, sizeof(fs_name))) {
error(_("could not get info for '%s'"), buf.buf);
res = -1;
goto cleanup;
}
strbuf_addf(out, "Available space on '%s': ", buf.buf);
strbuf_humanise_bytes(out, avail2caller.QuadPart);
strbuf_addch(out, '\n');
#else
struct statvfs stat;
strbuf_realpath(&buf, ".", 1);
if (statvfs(buf.buf, &stat) < 0) {
error_errno(_("could not determine free disk size for '%s'"),
buf.buf);
res = -1;
goto cleanup;
}
strbuf_addf(out, "Available space on '%s': ", buf.buf);
strbuf_humanise_bytes(out, (off_t)stat.f_bsize * (off_t)stat.f_bavail);
strbuf_addf(out, " (mount flags 0x%lx)\n", stat.f_flag);
#endif
cleanup:
strbuf_release(&buf);
return res;
}
#endif /* COMPAT_DISK_H */