From b750101eb236130cf056c675997decbac904cc49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:35:18 +0200 Subject: Adding upstream version 252.22. Signed-off-by: Daniel Baumann --- man/sd_is_fifo.xml | 201 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 201 insertions(+) create mode 100644 man/sd_is_fifo.xml (limited to 'man/sd_is_fifo.xml') diff --git a/man/sd_is_fifo.xml b/man/sd_is_fifo.xml new file mode 100644 index 0000000..99f1524 --- /dev/null +++ b/man/sd_is_fifo.xml @@ -0,0 +1,201 @@ + + + + + + + + sd_is_fifo + systemd + + + + sd_is_fifo + 3 + + + + sd_is_fifo + sd_is_socket + sd_is_socket_inet + sd_is_socket_unix + sd_is_socket_sockaddr + sd_is_mq + sd_is_special + Check the type of a file descriptor + + + + + #include <systemd/sd-daemon.h> + + + int sd_is_fifo + int fd + const char *path + + + + int sd_is_socket + int fd + int family + int type + int listening + + + + int sd_is_socket_inet + int fd + int family + int type + int listening + uint16_t port + + + + int sd_is_socket_sockaddr + int fd + int type + const struct sockaddr *addr + unsigned addr_len + int listening + + + + int sd_is_socket_unix + int fd + int type + int listening + const char *path + size_t length + + + + int sd_is_mq + int fd + const char *path + + + + int sd_is_special + int fd + const char *path + + + + + + + Description + + sd_is_fifo() may be called to check + whether the specified file descriptor refers to a FIFO or pipe. If + the path parameter is not + NULL, it is checked whether the FIFO is bound + to the specified file system path. + + sd_is_socket() may be called to check + whether the specified file descriptor refers to a socket. If the + family parameter is not + AF_UNSPEC, it is checked whether the socket + is of the specified family (AF_UNIX, + AF_INET, …). If the type + parameter is not 0, it is checked whether the socket is of the + specified type (SOCK_STREAM, + SOCK_DGRAM, …). If the + listening parameter is positive, it is + checked whether the socket is in accepting mode, i.e. + listen() has been called for it. If + listening is 0, it is checked whether the + socket is not in this mode. If the parameter is negative, no such + check is made. The listening parameter + should only be used for stream sockets and should be set to a + negative value otherwise. + + sd_is_socket_inet() is similar to + sd_is_socket(), but optionally checks the + IPv4 or IPv6 port number the socket is bound to, unless + port is zero. For this call + family must be passed as either + AF_UNSPEC, AF_INET, or + AF_INET6. + + sd_is_socket_sockaddr() is similar to + sd_is_socket_inet(), but checks if the socket is bound to the + address specified by addr. The + family specified by addr must be + either AF_INET or AF_INET6 and + addr_len must be large enough for that family. If + addr specifies a non-zero port, it is also checked if the + socket is bound to this port. In addition, for IPv6, if addr + specifies non-zero sin6_flowinfo or + sin6_scope_id, it is checked if the socket has the same + values. + + sd_is_socket_unix() is similar to + sd_is_socket() but optionally checks the + AF_UNIX path the socket is bound to, unless + the path parameter is + NULL. For normal file system + AF_UNIX sockets, set the + length parameter to 0. For Linux abstract + namespace sockets, set the length to the + size of the address, including the initial 0 byte, and set the + path to the initial 0 byte of the socket + address. + + sd_is_mq() may be called to check + whether the specified file descriptor refers to a POSIX message + queue. If the path parameter is not + NULL, it is checked whether the message queue + is bound to the specified name. + + sd_is_special() may be called to check + whether the specified file descriptor refers to a special file. If + the path parameter is not + NULL, it is checked whether the file + descriptor is bound to the specified filename. Special files in + this context are character device nodes and files in + /proc/ or /sys/. + + + + Return Value + + On failure, these calls return a negative errno-style error + code. If the file descriptor is of the specified type and bound to + the specified address, a positive return value is returned, + otherwise zero. + + + + Notes + + + + Internally, these function use a combination of + fstat() and + getsockname() to check the file descriptor + type and where it is bound to. + + + + See Also + + systemd1, + sd-daemon3, + sd_listen_fds3, + systemd.service5, + systemd.socket5, + ip7, + ipv67, + unix7, + fifo7, + mq_overview7, + socket7. + + + + -- cgit v1.2.3