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fsmonitor: refactor filesystem checks to common interface

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Provide a common interface for getting basic filesystem information
including filesystem type and whether the filesystem is remote.

Refactor existing code for getting basic filesystem info and detecting
remote file systems to the new interface.

Refactor filesystem checks to leverage new interface. For macOS,
error-out if the Unix Domain socket (UDS) file is on a remote
filesystem.

Signed-off-by: Eric DeCosta <edecosta@mathworks.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Eric DeCosta
2022-10-04 17:32:26 +00:00
committed by Junio C Hamano
parent 85dc0da6dc
commit 508c1a572d
8 changed files with 272 additions and 219 deletions
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43
compat/fsmonitor/fsm-path-utils-darwin.c Normal file
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#include "fsmonitor.h"
#include "fsmonitor-path-utils.h"
#include <sys/param.h>
#include <sys/mount.h>
int fsmonitor__get_fs_info(const char *path, struct fs_info *fs_info)
{
struct statfs fs;
if (statfs(path, &fs) == -1) {
int saved_errno = errno;
trace_printf_key(&trace_fsmonitor, "statfs('%s') failed: %s",
path, strerror(saved_errno));
errno = saved_errno;
return -1;
}
trace_printf_key(&trace_fsmonitor,
"statfs('%s') [type 0x%08x][flags 0x%08x] '%s'",
path, fs.f_type, fs.f_flags, fs.f_fstypename);
if (!(fs.f_flags & MNT_LOCAL))
fs_info->is_remote = 1;
else
fs_info->is_remote = 0;
fs_info->typename = xstrdup(fs.f_fstypename);
trace_printf_key(&trace_fsmonitor,
"'%s' is_remote: %d",
path, fs_info->is_remote);
return 0;
}
int fsmonitor__is_fs_remote(const char *path)
{
struct fs_info fs;
if (fsmonitor__get_fs_info(path, &fs))
return -1;
free(fs.typename);
return fs.is_remote;
}