X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsd_journal_print.xml;h=c6f204b8c6cf455490c9a501b765cf01ed45dd6d;hb=41fd4c4c15e74a39cecfa5f1764e039c8d88617b;hp=7742268f5d2d351d7be001e0fe222b6acb1e5001;hpb=bb31a4ac1997c189a344caf554f34c6aabc71aa7;p=elogind.git
diff --git a/man/sd_journal_print.xml b/man/sd_journal_print.xml
index 7742268f5..c6f204b8c 100644
--- a/man/sd_journal_print.xml
+++ b/man/sd_journal_print.xml
@@ -102,14 +102,14 @@
or
syslog3. The
priority value is one of
- LOG_EMERG,
- LOG_ALERT,
- LOG_CRIT,
- LOG_ERR,
- LOG_WARNING,
- LOG_NOTICE,
- LOG_INFO,
- LOG_DEBUG, as defined in
+ LOG_EMERG,
+ LOG_ALERT,
+ LOG_CRIT,
+ LOG_ERR,
+ LOG_WARNING,
+ LOG_NOTICE,
+ LOG_INFO,
+ LOG_DEBUG, as defined in
syslog.h, see
syslog3
for details. It is recommended to use this call to
@@ -120,7 +120,7 @@
sd_journal_printv() is
similar to sd_journal_print() but
takes a variable argument list encapsulated in an
- object of type va_list (see
+ object of type va_list (see
stdarg3
for more information) instead of the format string. It
is otherwise equivalent in behavior.
@@ -129,7 +129,7 @@
used to submit structured log entries to the system
journal. It takes a series of format strings, each
immediately followed by their associated parameters,
- terminated by NULL. The strings passed should be of
+ terminated by NULL. The strings passed should be of
the format VARIABLE=value. The
variable name must be in uppercase and consist only of
characters, numbers and underscores, and may not begin
@@ -138,7 +138,7 @@
of any size and format. It is highly recommended to
submit text strings formatted in the UTF-8 character
encoding only, and submit binary fields only when
- formatting in UTf-8 strings is not sensible. A number
+ formatting in UTF-8 strings is not sensible. A number
of well known fields are defined, see
systemd.journal-fields7
for details, but additional application defined fields
@@ -147,14 +147,14 @@
sd_journal_sendv() is
similar to sd_journal_send() but
- takes an array of struct iovec (as
+ takes an array of struct iovec (as
defined in uio.h, see
readv3
for details) instead of the format string. Each
structure should reference one field of the entry to
submit. The second argument specifies the number of
- structures in the
- array. sd_journal_sendv() is
+ structures in the array.
+ sd_journal_sendv() is
particularly useful to submit binary objects to the
journal where that is necessary.
@@ -166,12 +166,12 @@
readable representation of the current error code
stored in
errno3. If
- the message string is passed as NULL or empty string
+ the message string is passed as NULL or empty string,
only the error string representation will be written,
prefixed with nothing. An additional journal field
ERRNO= is included in the entry containing the numeric
error code formatted as decimal string. The log
- priority used is LOG_ERR (3).
+ priority used is LOG_ERR (3).
Note that sd_journal_send()
is a wrapper around
@@ -189,7 +189,7 @@ sd_journal_send("MESSAGE=Hello World, this is PID %lu!", (unsigned long) getpid(
Note that these calls implicitly add fields for
the source file, function name and code line where
invoked. This is implemented with macros. If this is
- not desired it can be turned off by defining
+ not desired, it can be turned off by defining
SD_JOURNAL_SUPPRESS_LOCATION before including
sd-journal.h.
@@ -202,8 +202,8 @@ sd_journal_send("MESSAGE=Hello World, this is PID %lu!", (unsigned long) getpid(
chronological ordering between the two streams cannot
be guaranteed. Using
sd_journal_print() has the
- benefit of logging source code line, file names, and
- functions as meta data along all entries, and
+ benefit of logging source code line, filenames, and
+ functions as metadata along all entries, and
guaranteeing chronological ordering with structured
log entries that are generated via
sd_journal_send(). Using
@@ -220,6 +220,19 @@ sd_journal_send("MESSAGE=Hello World, this is PID %lu!", (unsigned long) getpid(
variable itself is not altered.
+
+ Async signal safety
+ sd_journal_sendv() is "async signal
+ safe" in the meaning of signal7.
+
+
+ sd_journal_print,
+ sd_journal_printv,
+ sd_journal_send, and
+ sd_journal_perror are
+ not async signal safe.
+
+
Notes
@@ -227,10 +240,9 @@ sd_journal_send("MESSAGE=Hello World, this is PID %lu!", (unsigned long) getpid(
sd_journal_printv(),
sd_journal_send() and
sd_journal_sendv() interfaces
- are available as shared library, which can be compiled
+ are available as a shared library, which can be compiled
and linked to with the
- libsystemd-journal
- pkg-config1
+ libsystemd pkg-config1
file.
@@ -244,7 +256,9 @@ sd_journal_send("MESSAGE=Hello World, this is PID %lu!", (unsigned long) getpid(
syslog3,
perror3,
errno3,
- systemd.journal-fields7
+ systemd.journal-fields7,
+ signal7,
+ socket7