diff options
Diffstat (limited to 'src/bin/pg_combinebackup/copy_file.c')
| -rw-r--r-- | src/bin/pg_combinebackup/copy_file.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/src/bin/pg_combinebackup/copy_file.c b/src/bin/pg_combinebackup/copy_file.c index 4e27814839c..97ecda5a66d 100644 --- a/src/bin/pg_combinebackup/copy_file.c +++ b/src/bin/pg_combinebackup/copy_file.c @@ -40,6 +40,9 @@ static void copy_file_copyfile(const char *src, const char *dst, pg_checksum_context *checksum_ctx); #endif +static void copy_file_link(const char *src, const char *dest, + pg_checksum_context *checksum_ctx); + /* * Copy a regular file, optionally computing a checksum, and emitting * appropriate debug messages. But if we're in dry-run mode, then just emit @@ -69,7 +72,13 @@ copy_file(const char *src, const char *dst, } #ifdef WIN32 - copy_method = COPY_METHOD_COPYFILE; + /* + * We have no specific switch to enable CopyFile on Windows, because + * it's supported (as far as we know) on all Windows machines. So, + * automatically enable it unless some other strategy was selected. + */ + if (copy_method == COPY_METHOD_COPY) + copy_method = COPY_METHOD_COPYFILE; #endif /* Determine the name of the copy strategy for use in log messages. */ @@ -93,6 +102,10 @@ copy_file(const char *src, const char *dst, strategy_implementation = copy_file_copyfile; break; #endif + case COPY_METHOD_LINK: + strategy_name = "link"; + strategy_implementation = copy_file_link; + break; } if (dry_run) @@ -304,3 +317,21 @@ copy_file_copyfile(const char *src, const char *dst, checksum_file(src, checksum_ctx); } #endif /* WIN32 */ + +/* + * copy_file_link + * Hard-links a file from src to dest. + * + * If needed, also reads the file and calculates the checksum. + */ +static void +copy_file_link(const char *src, const char *dest, + pg_checksum_context *checksum_ctx) +{ + if (link(src, dest) < 0) + pg_fatal("error while linking file from \"%s\" to \"%s\": %m", + src, dest); + + /* if needed, calculate checksum of the file */ + checksum_file(src, checksum_ctx); +} |