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sd-daemon: rework documentation a little

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This commit is contained in:
Lennart Poettering 2010-06-02 04:24:33 +02:00
parent 0034c15c60
commit 695d1ef183
2 changed files with 16 additions and 12 deletions
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1
src/sd-daemon.c
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@ -89,7 +89,6 @@ int sd_listen_fds(int unset_environment) {
goto finish;
}
for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + (int) l; fd ++) {
int flags;

27
src/sd-daemon.h
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@ -30,10 +30,11 @@
#include <inttypes.h>
/* Reference implementation of a few systemd related interfaces for
* writing daemons. These interfaces are trivial to implement, however
* to simplify porting we provide this reference
* implementation. Applications are free to reimplement the algorithms
* described here. */
* writing daemons. These interfaces are trivial to implement. To
* simplify porting we provide this reference
* implementation. Applications are welcome to reimplement the
* algorithms described here, if they do not want to include these two
* source files. */
/*
Log levels for usage on stderr:
@ -56,12 +57,16 @@
#define SD_LISTEN_FDS_START 3
/* Returns how many file descriptors have been passed, or a negative
* errno code on failure. Optionally removes the $LISTEN_FDS and
* $LISTEN_PID file descriptors from the environment
* (recommended). You'll find the file descriptors passed as fds
* SD_LISTEN_FDS_START to SD_LISTEN_FDS_START+r-1 if r is the return
* value of this functioin. Returns a negative errno style error code
* on failure. */
* errno code on failure. Optionally, removes the $LISTEN_FDS and
* $LISTEN_PID file descriptors from the environment (recommended, but
* problematic in threaded environments). If r is the return value of
* this function you'll find the file descriptors passed as fds
* SD_LISTEN_FDS_START to SD_LISTEN_FDS_START+r-1. Returns a negative
* errno style error code on failure. This function call ensures that
* the FD_CLOEXEC flag is set for the passed file descriptors, to make
* sure they are not passed on to child processes. If FD_CLOEXEC shall
* not be set, the caller needs to unset it after this call for all file
* descriptors that are used.*/
int sd_listen_fds(int unset_environment);
/* Helper call for identifying a passed file descriptor. Returns 1 if
@ -86,7 +91,7 @@ int sd_is_socket(int fd, int family, int type, int listening);
/* Helper call for identifying a passed file descriptor. Returns 1 if
* the file descriptor is an Internet socket, of the specified family
* (either AF_INET or AF_INET6) of the specified type (SOCK_DGRAM,
* (either AF_INET or AF_INET6) and the specified type (SOCK_DGRAM,
* SOCK_STREAM, ...), 0 otherwise. If version is 0 a protocol version
* check is not done. If type is 0 a socket type check will not be
* done. If port is 0 a socket port check will not be done. The