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setuid(2) -- set user identity
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setuid sets the effective user ID of the current process. If the effective userid of the caller is root, the real and saved user ID's are also set. Under Linux, setuid is implemented like the POSIX v... |
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setup(2) -- setup devices and file systems, mount root file system
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setup is called once from within linux/init/main.c. It calls initialization functions for devices and file systems configured into the kernel and then mounts the root file system. No user process may ... |
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shmctl(2) -- shared memory control
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shmctl() allows the user to receive information on a shared memory segment, set the owner, group, and permissions of a shared memory segment, or destroy a segment. The information about the segment id... |
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shmget(2) -- allocates a shared memory segment
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shmget() returns the identifier of the shared memory segment associated to the value of the argument key. A new shared memory segment, with size equal to the round up of size to a multiple of PAGE_SIZ... |
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shmop(2) -- shared memory operations
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The function shmat attaches the shared memory segment identified by shmid to the data segment of the calling process. The attaching address is specified by shmaddr with one of the following criteria: ... |
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shutdown(2) -- shut down part of a full-duplex connection
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The shutdown call causes all or part of a full-duplex connection on the socket associated with s to be shut down. If how is 0, further receives will be disallowed. If how is 1, further sends will be d... |
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sigaction(2) -- POSIX signal handling functions.
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The sigaction system call is used to change the action taken by a process on receipt of a specific signal. signum specifies the signal and can be any valid signal except SIGKILL and SIGSTOP. If act is... |
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sigblock(2) -- manipulate the signal mask
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This interface is made obsolete by sigprocmask(2). The sigblock system call adds the signals specified in mask to the set of signals currently being blocked from delivery. The sigsetmask system call r... |
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signal(2) -- ANSI C signal handling
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The signal() system call installs a new signal handler for the signal with number signum. The signal handler is set to sighandler which may be a user specified function, or either SIG_IGN or SIG_DFL. ... |
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sigpause(2) -- atomically release blocked signals and wait for interrupt
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This interface is made obsolete by sigsuspend(2). sigpause assigns sigmask to the set of masked signals and then waits for a signal to arrive; on return the set of masked signals is restored. sigmask ... |
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sigreturn(2) -- return from signal handler and cleanup stack frame
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When the Linux kernel creates the stack frame for a signal handler, a call to sigreturn is inserted into the stack frame so that the the signal handler will call sigreturn upon return. This inserted c... |
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sigvec(2) -- BSD software signal facilities
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This interface is made obsolete by sigaction(2). Under Linux sigvec is #define'd to sigaction, and provides at best a rough approximation of the BSD sigvec interface. |
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socket(2) -- create an endpoint for communication
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Socket creates an endpoint for communication and returns a descriptor. The domain parameter specifies a communication domain; this selects the protocol family which will be used for communication. The... |
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socketcall(2) -- socket system calls
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socketcall is a common kernel entry point for the socket system calls. call determines which socket function to invoke. args points to a block containing the actual arguments, which are passed through... |
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socketpair(2) -- create a pair of connected sockets
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The call creates an unnamed pair of connected sockets in the specified domain d, of the specified type, and using the optionally specified protocol. The descriptors used in referencing the new sockets... |
