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common: Rename keybox_file_rename to gnupg_rename_file.

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* kbx/keybox-util.c (keybox_file_rename): Rename to ...
* common/sysutils.c (gnupg_rename_file): this.  Change all callers.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2016-11-16 17:43:59 +01:00
parent c564790df7
commit c4506a3f15
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
6 changed files with 77 additions and 71 deletions
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70
common/sysutils.c
View File

@ -618,6 +618,76 @@ gnupg_remove (const char *fname)
}
/* Wrapper for rename(2) to handle Windows peculiarities. If
* BLOCK_SIGNALS is not NULL and points to a variable set to true, all
* signals will be blocked by calling gnupg_block_all_signals; the
* caller needs to call gnupg_unblock_all_signals if that variable is
* still set to true on return. */
gpg_error_t
gnupg_rename_file (const char *oldname, const char *newname, int *block_signals)
{
gpg_error_t err = 0;
if (block_signals && *block_signals)
gnupg_block_all_signals ();
#ifdef HAVE_DOSISH_SYSTEM
{
int wtime = 0;
gnupg_remove (newname);
again:
if (rename (oldname, newname))
{
if (GetLastError () == ERROR_SHARING_VIOLATION)
{
/* Another process has the file open. We do not use a
* lock for read but instead we wait until the other
* process has closed the file. This may take long but
* that would also be the case with a dotlock approach for
* read and write. Note that we don't need this on Unix
* due to the inode concept.
*
* So let's wait until the rename has worked. The retry
* intervals are 50, 100, 200, 400, 800, 50ms, ... */
if (!wtime || wtime >= 800)
wtime = 50;
else
wtime *= 2;
if (wtime >= 800)
log_info (_("waiting for file '%s' to become accessible ...\n"),
oldname);
Sleep (wtime);
goto again;
}
err = my_error_from_syserror ();
}
}
#else /* Unix */
{
#ifdef __riscos__
gnupg_remove (newname);
#endif
if (rename (oldname, newname) )
err = my_error_from_syserror ();
}
#endif /* Unix */
if (block_signals && *block_signals && err)
{
gnupg_unblock_all_signals ();
*block_signals = 0;
}
if (err)
log_error (_("renaming '%s' to '%s' failed: %s\n"),
oldname, newname, gpg_strerror (err));
return err;
}
#ifndef HAVE_W32_SYSTEM
static mode_t
modestr_to_mode (const char *modestr)

2
common/sysutils.h
View File

@ -61,6 +61,8 @@ FILE *gnupg_tmpfile (void);
void gnupg_reopen_std (const char *pgmname);
void gnupg_allow_set_foregound_window (pid_t pid);
int gnupg_remove (const char *fname);
gpg_error_t gnupg_rename_file (const char *oldname, const char *newname,
int *block_signals);
int gnupg_mkdir (const char *name, const char *modestr);
int gnupg_chmod (const char *name, const char *modestr);
char *gnupg_mkdtemp (char *template);

4
g10/keyring.c
View File

@ -1351,12 +1351,12 @@ rename_tmp_file (const char *bakfname, const char *tmpfname, const char *fname)
/* First make a backup file. */
block = 1;
rc = keybox_file_rename (fname, bakfname, &block);
rc = gnupg_rename_file (fname, bakfname, &block);
if (rc)
goto fail;
/* then rename the file */
rc = keybox_file_rename (tmpfname, fname, NULL);
rc = gnupg_rename_file (tmpfname, fname, NULL);
if (block)
{
gnupg_unblock_all_signals ();

4
kbx/keybox-update.c
View File

@ -122,13 +122,13 @@ rename_tmp_file (const char *bakfname, const char *tmpfname,
if (!secret)
{
block = 1;
rc = keybox_file_rename (fname, bakfname, &block);
rc = gnupg_rename_file (fname, bakfname, &block);
if (rc)
goto leave;
}
/* Then rename the file. */
rc = keybox_file_rename (tmpfname, fname, NULL);
rc = gnupg_rename_file (tmpfname, fname, NULL);
if (block)
{
gnupg_unblock_all_signals ();

66
kbx/keybox-util.c
View File

@ -147,73 +147,9 @@ keybox_tmp_names (const char *filename, int for_keyring,
return 0;
}
/* Wrapper for rename(2) to handle Windows peculiarities. If
* BLOCK_SIGNALS is not NULL and points to a variable set to true, all
* signals will be blocked by calling gnupg_block_all_signals; the
* caller needs to call gnupg_unblock_all_signals if that variable is
* still set to true on return. */
gpg_error_t
keybox_file_rename (const char *oldname, const char *newname,
int *block_signals)
{
gpg_error_t err = 0;
if (block_signals && *block_signals)
gnupg_block_all_signals ();
#ifdef HAVE_DOSISH_SYSTEM
{
int wtime = 0;
gnupg_remove (newname);
again:
if (rename (oldname, newname))
{
if (GetLastError () == ERROR_SHARING_VIOLATION)
{
/* Another process has the file open. We do not use a
* lock for read but instead we wait until the other
* process has closed the file. This may take long but
* that would also be the case with a dotlock approach for
* read and write. Note that we don't need this on Unix
* due to the inode concept.
*
* So let's wait until the rename has worked. The retry
* intervals are 50, 100, 200, 400, 800, 50ms, ... */
if (!wtime || wtime >= 800)
wtime = 50;
else
wtime *= 2;
if (wtime >= 800)
log_info ("waiting for file '%s' to become accessible ...\n",
oldname);
Sleep (wtime);
goto again;
}
err = gpg_error_from_syserror ();
}
}
#else /* Unix */
{
#ifdef __riscos__
gnupg_remove (newname);
#endif
if (rename (oldname, newname) )
err = gpg_error_from_syserror ();
}
#endif /* Unix */
if (block_signals && *block_signals && err)
{
gnupg_unblock_all_signals ();
*block_signals = 0;
}
if (err)
log_error ("renaming '%s' to '%s' failed: %s\n",
oldname, newname, gpg_strerror (err));
return err;
return gnupg_rename_file (oldname, newname, block_signals);
}

2
kbx/keybox.h
View File

@ -134,8 +134,6 @@ void keybox_set_malloc_hooks ( void *(*new_alloc_func)(size_t n),
gpg_error_t keybox_tmp_names (const char *filename, int for_keyring,
char **r_bakname, char **r_tmpname);
gpg_error_t keybox_file_rename (const char *oldname, const char *newname,
int *block_signals);
#ifdef __cplusplus