strtonum: Added small bits of documentation

[libucw.git] / ucw / log-file.c

diff --git a/ucw/log-file.c b/ucw/log-file.c
index f04e68dc2aab4d03e3bd65d866c9fb638c07669a..b00f5b3a054304bc951bdd1cd8f55b5710ffc5d9 100644 (file)
--- a/ucw/log-file.c
+++ b/ucw/log-file.c
@@ -8,18 +8,19 @@
  *     of the GNU Lesser General Public License.
  */
 
-#include "ucw/lib.h"
-#include "ucw/log.h"
-#include "ucw/log-internal.h"
-#include "ucw/lfs.h"
-#include "ucw/threads.h"
-#include "ucw/simple-lists.h"
+#include <ucw/lib.h>
+#include <ucw/log.h>
+#include <ucw/log-internal.h>
+#include <ucw/io.h>
+#include <ucw/threads.h>
+#include <ucw/simple-lists.h>
 
 #include <stdio.h>
 #include <string.h>
 #include <fcntl.h>
 #include <unistd.h>
 #include <time.h>
+#include <errno.h>
 
 struct file_stream {
   struct log_stream ls;                // ls.name is the current name of the log file
@@ -28,12 +29,6 @@ struct file_stream {
   char *orig_name;             // Original name with strftime escapes
 };
 
-enum log_file_flag {
-  FF_FORMAT_NAME = 1,          // Name contains strftime escapes
-  FF_CLOSE_FD = 2,             // Close the fd with the stream
-  FF_FD2_FOLLOWS = 4,          // Maintain stderr as a clone of this stream
-};
-
 #define MAX_EXPAND 64          // Maximum size of expansion of strftime escapes
 
 static int log_switch_nest;
@@ -111,16 +106,16 @@ file_handler(struct log_stream *ls, struct log_msg *m)
     do_log_switch(fs, m->tm);
 
   int r = write(fs->fd, m->m, m->m_len);
-  /* FIXME: check for errors here? */
-  return 0;
+  return ((r < 0) ? errno : 0);
 }
 
 struct log_stream *
-log_new_fd(int fd)
+log_new_fd(int fd, uns flags)
 {
   struct log_stream *ls = log_new_stream(sizeof(struct file_stream));
   struct file_stream *fs = (struct file_stream *) ls;
   fs->fd = fd;
+  fs->flags = flags;
   ls->msgfmt = LSFMT_DEFAULT;
   ls->handler = file_handler;
   ls->close = file_close;
@@ -129,8 +124,8 @@ log_new_fd(int fd)
   return ls;
 }
 
-static struct log_stream *
-do_log_new_file(const char *path, uns more_flags)
+struct log_stream *
+log_new_file(const char *path, uns flags)
 {
   struct log_stream *ls = log_new_stream(sizeof(struct file_stream));
   struct file_stream *fs = (struct file_stream *) ls;
@@ -138,7 +133,7 @@ do_log_new_file(const char *path, uns more_flags)
   fs->orig_name = xstrdup(path);
   if (strchr(path, '%'))
     fs->flags = FF_FORMAT_NAME;
-  fs->flags |= FF_CLOSE_FD | more_flags;
+  fs->flags |= FF_CLOSE_FD | flags;
   ls->msgfmt = LSFMT_DEFAULT;
   ls->handler = file_handler;
   ls->close = file_close;
@@ -150,12 +145,6 @@ do_log_new_file(const char *path, uns more_flags)
   return ls;
 }
 
-struct log_stream *
-log_new_file(const char *path)
-{
-  return do_log_new_file(path, 0);
-}
-
 int
 log_switch(void)
 {
@@ -189,11 +178,7 @@ log_file(const char *name)
   if (!name)
     return;
 
-  struct log_stream *ls = do_log_new_file(name, FF_FD2_FOLLOWS);
-  struct log_stream *def = log_stream_by_flags(0);
-  log_rm_substream(def, NULL);
-  log_add_substream(def, ls);
-  log_close_stream(ls);
+  log_set_default_stream(log_new_file(name, FF_FD2_FOLLOWS));
 }
 
 #ifdef TEST
@@ -202,8 +187,8 @@ int main(int argc, char **argv)
 {
   log_init(argv[0]);
   log_file("/proc/self/fd/1");
-  // struct log_stream *ls = log_new_fd(1);
-  // struct log_stream *ls = log_new_file("/tmp/quork-%Y%m%d-%H%M%S");
+  // struct log_stream *ls = log_new_fd(1, 0);
+  // struct log_stream *ls = log_new_file("/tmp/quork-%Y%m%d-%H%M%S", 0);
   for (int i=1; i<argc; i++)
     msg(L_INFO, argv[i]);
   log_close_all();