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SYSLOG logic should use existing file interfaces, not re-invent them.

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This commit is contained in:
Gregory Nutt
2016-07-05 12:12:44 -06:00
parent 3b825b3e00
commit a39ce80add
6 changed files with 85 additions and 61 deletions
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drivers/syslog/syslog_device.c
+12 -40
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@@ -133,9 +133,9 @@ static inline int syslog_dev_takesem(void)
int ret;
/* Does this thread already hold the semaphore? That could happen if
* we wer called recursively, i.e., if the logic kicked off by
* syslog_dev_write() where to generate more debug output. Return an error
* in that case.
* we were called recursively, i.e., if the logic kicked off by
* file_write() where to generate more debug output. Return an
* error in that case.
*/
if (g_syslog_dev.sl_holder == me)
@@ -184,26 +184,6 @@ static inline void syslog_dev_givesem(void)
sem_post(&g_syslog_dev.sl_sem);
}
/****************************************************************************
* Name: syslog_dev_write
*
* Description:
* Write to the syslog device
*
****************************************************************************/
static inline ssize_t syslog_dev_write(FAR const void *buf, size_t nbytes)
{
FAR struct inode *inode;
/* Let the driver perform the write */
inode = g_syslog_dev.sl_file.f_inode;
DEBUGASSERT(inode != NULL && inode->u.i_ops->write != NULL);
return inode->u.i_ops->write(&g_syslog_dev.sl_file, buf, nbytes);
}
/****************************************************************************
* Public Functions
****************************************************************************/
@@ -505,7 +485,7 @@ int syslog_dev_putc(int ch)
if (ret < 0)
{
/* We probably already hold the semaphore and were probably
* re-entered by the logic kicked off by syslog_dev_write().
* re-entered by the logic kicked off by file_write().
* We might also have been interrupted by a signal. Either
* way, we are outta here.
*/
@@ -520,7 +500,7 @@ int syslog_dev_putc(int ch)
{
/* Write the CR-LF sequence */
nbytes = syslog_dev_write(g_syscrlf, 2);
nbytes = file_write(&g_syslog_dev.sl_file, g_syscrlf, 2);
/* Synchronize the file when each CR-LF is encountered (i.e.,
* implements line buffering always).
@@ -538,7 +518,7 @@ int syslog_dev_putc(int ch)
/* Write the non-newline character (and don't flush) */
uch = (uint8_t)ch;
nbytes = syslog_dev_write(&uch, 1);
nbytes = file_write(&g_syslog_dev.sl_file, &uch, 1);
}
syslog_dev_givesem();
@@ -576,24 +556,16 @@ errout_with_errcode:
int syslog_dev_flush(void)
{
int ret = 0;;
#if defined(CONFIG_SYSLOG_FILE) && !defined(CONFIG_DISABLE_MOUNTPOINT)
FAR struct inode *inode = g_syslog_dev.sl_file.f_inode;
/* Ignore return value, always return success. file_fsync() could fail
* because the file is not open, the inode is not a mountpoint, or the
* mountpoint does not support the sync() method.
*/
/* Is this a mountpoint? Does it support the sync method? */
if (inode != NULL && /* File opened (i.e., has inode)? */
INODE_IS_MOUNTPT(inode) && /* Inode is a mountpoint? */
inode->u.i_mops->sync != NULL) /* And supports synce method? */
{
/* Yes... synchronize to the stream */
ret = inode->u.i_mops->sync(&g_syslog_dev.sl_file);
}
(void)file_fsync(&g_syslog_dev.sl_file);
#endif
return ret;
return OK;
}
#endif /* CONFIG_NFILE_DESCRIPTORS > 0 */