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Use macros for iobuf ioctls.

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This commit is contained in:
Werner Koch 2010-03-08 17:05:37 +00:00
parent 1b845104ac
commit 40a78fab0c
16 changed files with 103 additions and 94 deletions
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10
common/ChangeLog
View File

@ -1,5 +1,13 @@
2010-03-08 Werner Koch <wk@g10code.com>
* iobuf.h (iobuf_ioctl_t): New. Use the new macros instead of the
hard wired values.
* iobuf.c (iobuf_append): Remove.
(iobuf_fdopen): Factor code out to ...
(do_iobuf_fdopen): ... new.
(iobuf_fdopen_nc): New.
(iobuf_open_fd_or_name): Implement using iobuf_fdopen_nc.
* iobuf.c (INVALID_FD): Replace by GNUPG_INVALID_FD.
(fp_or_fd_t): Replace by gnupg_fd_t.
(my_fileno): Replace by the FD2INT macro.
@ -250,7 +258,7 @@
* iobuf.c: Port David's changes from 1.4:
(fd_cache_invalidate): Pass return code from close back.
(direct_open, iobuf_ioctl): Check that eturn value.
(direct_open, iobuf_ioctl): Check that return value.
(fd_cache_synchronize): New.
(iobuf_ioctl): Add new sub command 4 (fsync).

99
common/iobuf.c
View File

@ -1159,15 +1159,7 @@ iobuf_open_fd_or_name (gnupg_fd_t fd, const char *fname, const char *mode)
if (fd == -1)
a = iobuf_open (fname);
else
{
int fd2;
fd2 = dup (fd);
if (fd2 == -1)
a = NULL;
else
a = iobuf_fdopen (fd2, mode);
}
a = iobuf_fdopen_nc (fd, mode);
return a;
}
@ -1214,36 +1206,50 @@ iobuf_open (const char *fname)
return a;
}
/****************
* Create a head iobuf for reading or writing from/to a file
* Returns: NULL if an error occures and sets ERRNO.
*/
iobuf_t
iobuf_fdopen (int fd, const char *mode)
static iobuf_t
do_iobuf_fdopen (int fd, const char *mode, int keep_open)
{
iobuf_t a;
gnupg_fd_t fp;
file_filter_ctx_t *fcx;
size_t len;
fp = (gnupg_fd_t) fd;
fp = INT2FD (fd);
a = iobuf_alloc (strchr (mode, 'w') ? 2 : 1, IOBUF_BUFFER_SIZE);
fcx = xmalloc (sizeof *fcx + 20);
fcx->fp = fp;
fcx->print_only_name = 1;
fcx->keep_open = keep_open;
sprintf (fcx->fname, "[fd %d]", fd);
a->filter = file_filter;
a->filter_ov = fcx;
file_filter (fcx, IOBUFCTRL_DESC, NULL, (byte *) & a->desc, &len);
file_filter (fcx, IOBUFCTRL_INIT, NULL, NULL, &len);
if (DBG_IOBUF)
log_debug ("iobuf-%d.%d: fdopen `%s'\n", a->no, a->subno, fcx->fname);
iobuf_ioctl (a, 3, 1, NULL); /* disable fd caching */
log_debug ("iobuf-%d.%d: fdopen%s `%s'\n",
a->no, a->subno, keep_open? "_nc":"", fcx->fname);
iobuf_ioctl (a, IOBUF_IOCTL_NO_CACHE, 1, NULL);
return a;
}
/* Create a head iobuf for reading or writing from/to a file Returns:
* NULL and sets ERRNO if an error occured. */
iobuf_t
iobuf_fdopen (int fd, const char *mode)
{
return do_iobuf_fdopen (fd, mode, 0);
}
iobuf_t
iobuf_fdopen_nc (int fd, const char *mode)
{
return do_iobuf_fdopen (fd, mode, 1);
}
iobuf_t
iobuf_sockopen (int fd, const char *mode)
{
@ -1263,7 +1269,7 @@ iobuf_sockopen (int fd, const char *mode)
sock_filter (scx, IOBUFCTRL_INIT, NULL, NULL, &len);
if (DBG_IOBUF)
log_debug ("iobuf-%d.%d: sockopen `%s'\n", a->no, a->subno, scx->fname);
iobuf_ioctl (a, 3, 1, NULL); /* disable fd caching */
iobuf_ioctl (a, IOBUF_IOCTL_NO_CACHE, 1, NULL);
#else
a = iobuf_fdopen (fd, mode);
#endif
@ -1311,40 +1317,6 @@ iobuf_create (const char *fname)
return a;
}
/****************
* append to an iobuf; if the file does not exist, create it.
* cannot be used for stdout.
* Note: This is not used.
*/
#if 0 /* not used */
iobuf_t
iobuf_append (const char *fname)
{
iobuf_t a;
FILE *fp;
file_filter_ctx_t *fcx;
size_t len;
if (!fname)
return NULL;
else if (!(fp = direct_open (fname, "ab")))
return NULL;
a = iobuf_alloc (2, IOBUF_BUFFER_SIZE);
fcx = m_alloc (sizeof *fcx + strlen (fname));
fcx->fp = fp;
strcpy (fcx->fname, fname);
a->real_fname = m_strdup (fname);
a->filter = file_filter;
a->filter_ov = fcx;
file_filter (fcx, IOBUFCTRL_DESC, NULL, (byte *) & a->desc, &len);
file_filter (fcx, IOBUFCTRL_INIT, NULL, NULL, &len);
if (DBG_IOBUF)
log_debug ("iobuf-%d.%d: append `%s'\n", a->no, a->subno,
a->desc?a->desc:"?");
return a;
}
#endif
iobuf_t
iobuf_openrw (const char *fname)
@ -1376,12 +1348,15 @@ iobuf_openrw (const char *fname)
int
iobuf_ioctl (iobuf_t a, int cmd, int intval, void *ptrval)
iobuf_ioctl (iobuf_t a, iobuf_ioctl_t cmd, int intval, void *ptrval)
{
if (cmd == 1)
{ /* keep system filepointer/descriptor open */
if (cmd == IOBUF_IOCTL_KEEP_OPEN)
{
/* Keep system filepointer/descriptor open. This was used in
the past by http.c; this ioctl is not directly used
anymore. */
if (DBG_IOBUF)
log_debug ("iobuf-%d.%d: ioctl `%s' keep=%d\n",
log_debug ("iobuf-%d.%d: ioctl `%s' keep_open=%d\n",
a ? a->no : -1, a ? a->subno : -1,
a && a->desc ? a->desc : "?",
intval);
@ -1401,8 +1376,8 @@ iobuf_ioctl (iobuf_t a, int cmd, int intval, void *ptrval)
}
#endif
}
else if (cmd == 2)
{ /* invalidate cache */
else if (cmd == IOBUF_IOCTL_INVALIDATE_CACHE)
{
if (DBG_IOBUF)
log_debug ("iobuf-*.*: ioctl `%s' invalidate\n",
ptrval ? (char *) ptrval : "?");
@ -1413,8 +1388,8 @@ iobuf_ioctl (iobuf_t a, int cmd, int intval, void *ptrval)
return 0;
}
}
else if (cmd == 3)
{ /* disallow/allow caching */
else if (cmd == IOBUF_IOCTL_NO_CACHE)
{
if (DBG_IOBUF)
log_debug ("iobuf-%d.%d: ioctl `%s' no_cache=%d\n",
a ? a->no : -1, a ? a->subno : -1,
@ -1436,7 +1411,7 @@ iobuf_ioctl (iobuf_t a, int cmd, int intval, void *ptrval)
}
#endif
}
else if (cmd == 4)
else if (cmd == IOBUF_IOCTL_FSYNC)
{
/* Do a fsync on the open fd and return any errors to the caller
of iobuf_ioctl. Note that we work on a file name here. */

27
common/iobuf.h
View File

@ -1,5 +1,6 @@
/* iobuf.h - I/O buffer
* Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
* Copyright (C) 1998, 1999, 2000, 2001, 2003,
* 2010 Free Software Foundation, Inc.
*
* This file is part of GNUPG.
*
@ -25,7 +26,7 @@
#define DBG_IOBUF iobuf_debug_mode
/* Filter control modes. */
#define IOBUFCTRL_INIT 1
#define IOBUFCTRL_FREE 2
#define IOBUFCTRL_UNDERFLOW 3
@ -34,6 +35,17 @@
#define IOBUFCTRL_CANCEL 6
#define IOBUFCTRL_USER 16
/* Command codes for iobuf_ioctl. */
typedef enum
{
IOBUF_IOCTL_KEEP_OPEN = 1, /* Uses intval. */
IOBUF_IOCTL_INVALIDATE_CACHE = 2, /* Uses ptrval. */
IOBUF_IOCTL_NO_CACHE = 3, /* Uses intval. */
IOBUF_IOCTL_FSYNC = 4 /* Uses ptrval. */
} iobuf_ioctl_t;
typedef struct iobuf_struct *iobuf_t;
typedef struct iobuf_struct *IOBUF; /* Compatibility with gpg 1.4. */
@ -89,11 +101,12 @@ iobuf_t iobuf_open_fd_or_name (gnupg_fd_t fd, const char *fname,
const char *mode);
iobuf_t iobuf_open (const char *fname);
iobuf_t iobuf_fdopen (int fd, const char *mode);
iobuf_t iobuf_fdopen_nc (int fd, const char *mode);
iobuf_t iobuf_sockopen (int fd, const char *mode);
iobuf_t iobuf_create (const char *fname);
iobuf_t iobuf_append (const char *fname);
iobuf_t iobuf_openrw (const char *fname);
int iobuf_ioctl (iobuf_t a, int cmd, int intval, void *ptrval);
int iobuf_ioctl (iobuf_t a, iobuf_ioctl_t cmd, int intval, void *ptrval);
int iobuf_close (iobuf_t iobuf);
int iobuf_cancel (iobuf_t iobuf);
@ -140,10 +153,10 @@ void iobuf_set_partial_block_mode (iobuf_t a, size_t len);
void iobuf_skip_rest (iobuf_t a, unsigned long n, int partial);
/* get a byte form the iobuf; must check for eof prior to this function
* this function returns values in the range 0 .. 255 or -1 to indicate EOF
* iobuf_get_noeof() does not return -1 to indicate EOF, but masks the
* returned value to be in the range 0 ..255.
/* Get a byte from the iobuf; must check for eof prior to this
* function. This function returns values in the range 0 .. 255 or -1
* to indicate EOF. iobuf_get_noeof() does not return -1 to indicate
* EOF, but masks the returned value to be in the range 0 .. 255.
*/
#define iobuf_get(a) \
( ((a)->nofast || (a)->d.start >= (a)->d.len )? \

4
g10/ChangeLog
View File

@ -1,3 +1,7 @@
2010-03-08 Werner Koch <wk@g10code.com>
Use macros for iobuf_ioctl commands.
2010-02-17 Werner Koch <wk@g10code.com>
* keygen.c (ask_user_id): Avoid infinite loop in case of invalid

2
g10/decrypt.c
View File

@ -223,7 +223,7 @@ decrypt_messages (int nfiles, char *files[])
goto next_file;
fp = iobuf_open(filename);
if (fp)
iobuf_ioctl (fp,3,1,NULL); /* disable fd caching */
iobuf_ioctl (fp, IOBUF_IOCTL_NO_CACHE, 1, NULL);
if (fp && is_secured_file (iobuf_get_fd (fp)))
{
iobuf_close (fp);

4
g10/encrypt.c
View File

@ -185,7 +185,7 @@ encrypt_simple (const char *filename, int mode, int use_seskey)
/* Prepare iobufs. */
inp = iobuf_open(filename);
if (inp)
iobuf_ioctl (inp,3,1,NULL); /* disable fd caching */
iobuf_ioctl (inp, IOBUF_IOCTL_NO_CACHE, 1, NULL);
if (inp && is_secured_file (iobuf_get_fd (inp)))
{
iobuf_close (inp);
@ -526,7 +526,7 @@ encrypt_crypt (int filefd, const char *filename,
/* Prepare iobufs. */
inp = iobuf_open_fd_or_name (filefd, filename, "rb");
if (inp)
iobuf_ioctl (inp, 3, 1, NULL); /* Disable fd caching. */
iobuf_ioctl (inp, IOBUF_IOCTL_NO_CACHE, 1, NULL);
if (inp && is_secured_file (iobuf_get_fd (inp)))
{
iobuf_close (inp);

6
g10/exec.c
View File

@ -449,8 +449,8 @@ exec_write(struct exec_info **info,const char *program,
goto fail;
}
/* fd iobufs are cached?! */
iobuf_ioctl((*info)->fromchild,3,1,NULL);
/* fd iobufs are cached! */
iobuf_ioctl((*info)->fromchild, IOBUF_IOCTL_NO_CACHE, 1, NULL);
return 0;
}
@ -556,7 +556,7 @@ exec_read(struct exec_info *info)
}
/* Do not cache this iobuf on close */
iobuf_ioctl(info->fromchild,3,1,NULL);
iobuf_ioctl(info->fromchild, IOBUF_IOCTL_NO_CACHE, 1, NULL);
}
}

3
g10/import.c
View File

@ -196,7 +196,8 @@ import_keys_internal( IOBUF inp, char **fnames, int nnames,
rc = import( inp2, fname, stats, fpr, fpr_len, options );
iobuf_close(inp2);
/* Must invalidate that ugly cache to actually close it. */
iobuf_ioctl (NULL, 2, 0, (char*)fname);
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE,
0, (char*)fname);
if( rc )
log_error("import from `%s' failed: %s\n", fname,
g10_errstr(rc) );

2
g10/keydb.c
View File

@ -188,7 +188,7 @@ maybe_create_keyring (char *filename, int force)
iobuf_close (iobuf);
/* Must invalidate that ugly cache */
iobuf_ioctl (NULL, 2, 0, filename);
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, filename);
rc = 0;
leave:

2
g10/keyedit.c
View File

@ -1981,7 +1981,7 @@ keyedit_menu( const char *username, strlist_t locusr,
init_packet (pkt);
rc = parse_packet (a, pkt);
iobuf_close (a);
iobuf_ioctl (NULL, 2, 0, (char*)fname); /* (invalidate cache). */
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)fname);
if (!rc
&& pkt->pkttype != PKT_SECRET_KEY
&& pkt->pkttype != PKT_SECRET_SUBKEY)

16
g10/keygen.c
View File

@ -2877,7 +2877,7 @@ read_parameter_file( const char *fname )
log_error (_("can't open `%s': %s\n"), fname, strerror(errno) );
return;
}
iobuf_ioctl (fp, 3, 1, NULL); /* No file caching. */
iobuf_ioctl (fp, IOBUF_IOCTL_NO_CACHE, 1, NULL);
lnr = 0;
err = NULL;
@ -3018,9 +3018,11 @@ read_parameter_file( const char *fname )
/* Must invalidate that ugly cache to actually close it. */
if (outctrl.pub.fname)
iobuf_ioctl (NULL, 2, 0, (char*)outctrl.pub.fname);
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE,
0, (char*)outctrl.pub.fname);
if (outctrl.sec.fname)
iobuf_ioctl (NULL, 2, 0, (char*)outctrl.sec.fname);
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE,
0, (char*)outctrl.sec.fname);
xfree( outctrl.pub.fname );
xfree( outctrl.pub.newfname );
@ -3377,7 +3379,8 @@ do_generate_keypair (struct para_data_s *para,
iobuf_close(outctrl->pub.stream);
outctrl->pub.stream = NULL;
if (outctrl->pub.fname)
iobuf_ioctl (NULL, 2, 0, (char*)outctrl->pub.fname);
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE,
0, (char*)outctrl->pub.fname);
xfree( outctrl->pub.fname );
outctrl->pub.fname = outctrl->pub.newfname;
outctrl->pub.newfname = NULL;
@ -3408,7 +3411,8 @@ do_generate_keypair (struct para_data_s *para,
iobuf_close(outctrl->sec.stream);
outctrl->sec.stream = NULL;
if (outctrl->sec.fname)
iobuf_ioctl (NULL, 2, 0, (char*)outctrl->sec.fname);
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE,
0, (char*)outctrl->sec.fname);
xfree( outctrl->sec.fname );
outctrl->sec.fname = outctrl->sec.newfname;
outctrl->sec.newfname = NULL;
@ -4187,7 +4191,7 @@ gen_card_key_with_backup (int algo, int keyno, int is_primary,
char *fprbuf, *p;
iobuf_close (fp);
iobuf_ioctl (NULL, 2, 0, (char*)fname);
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)fname);
log_info (_("NOTE: backup of card key saved to `%s'\n"), fname);
fingerprint_from_sk (sk, array, &n);

8
g10/keyring.c
View File

@ -1255,20 +1255,20 @@ rename_tmp_file (const char *bakfname, const char *tmpfname,
/* It's a secret keyring, so let's force a fsync just to be safe on
filesystems that may not sync data and metadata together
(e.g. ext4). */
if (secret && iobuf_ioctl (NULL, 4, 0, (char*)tmpfname))
if (secret && iobuf_ioctl (NULL, IOBUF_IOCTL_FSYNC, 0, (char*)tmpfname))
{
rc = gpg_error_from_syserror ();
goto fail;
}
/* Invalidate close caches. */
if (iobuf_ioctl (NULL, 2, 0, (char*)tmpfname ))
if (iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)tmpfname ))
{
rc = gpg_error_from_syserror ();
goto fail;
}
iobuf_ioctl (NULL, 2, 0, (char*)bakfname );
iobuf_ioctl (NULL, 2, 0, (char*)fname );
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)bakfname );
iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)fname );
/* first make a backup file except for secret keyrings */
if (!secret)

2
g10/openfile.c
View File

@ -305,7 +305,7 @@ open_outfile (int inp_fd, const char *iname, int mode, iobuf_t *a)
}
if (*a)
iobuf_ioctl (*a, 3, 1, NULL); /* Disable fd caching. */
iobuf_ioctl (*a, IOBUF_IOCTL_NO_CACHE, 1, NULL);
return rc;
}

2
g10/verify.c
View File

@ -150,7 +150,7 @@ verify_one_file( const char *name )
print_file_status( STATUS_FILE_START, name, 1 );
fp = iobuf_open(name);
if (fp)
iobuf_ioctl (fp,3,1,NULL); /* disable fd caching */
iobuf_ioctl (fp, IOBUF_IOCTL_NO_CACHE, 1, NULL);
if (fp && is_secured_file (iobuf_get_fd (fp)))
{
iobuf_close (fp);

4
kbx/ChangeLog
View File

@ -1,3 +1,7 @@
2010-03-08 Werner Koch <wk@g10code.com>
Use macros for iobuf_ioctl commands.
2009-12-08 Werner Koch <wk@g10code.com>
* keybox-search-desc.h (keydb_search_desc): Use u32 type for

6
kbx/keybox-update.c
View File

@ -166,9 +166,9 @@ rename_tmp_file (const char *bakfname, const char *tmpfname,
#endif
/* fixme: invalidate close caches (not used with stdio)*/
/* iobuf_ioctl (NULL, 2, 0, (char*)tmpfname ); */
/* iobuf_ioctl (NULL, 2, 0, (char*)bakfname ); */
/* iobuf_ioctl (NULL, 2, 0, (char*)fname ); */
/* iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)tmpfname ); */
/* iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)bakfname ); */
/* iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)fname ); */
/* First make a backup file except for secret keyboxes. */
if (!secret)