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revoke(2) -- revoke file access
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The revoke function invalidates all current open file descriptors in the system for the file named by path. Subsequent operations on any such descriptors fail, with the exceptions that a read() from a... |
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rmdir(2) -- remove a directory file
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rmdir() removes a directory file whose name is given by path. The directory must not have any entries other than `.' and `..'. |
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sbrk(2) -- change data segment size
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The brk and sbrk functions are legacy interfaces from before the advent of modern virtual memory management. The brk() and sbrk() functions are used to change the amount of memory allocated in a proce... |
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seek(2) -- reposition read/write file offset
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The lseek() function repositions the offset of the file descriptor fildes to the argument offset according to the directive whence. The argument fildes must be an open file descriptor. lseek() reposit... |
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select(2) -- synchronous I/O multiplexing
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select() examines the I/O descriptor sets whose addresses are passed in readfds, writefds, and exceptfds to see if some of their descriptors are ready for reading, are ready for writing, or have an ex... |
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semctl(2) -- semaphore control operations
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The semctl() system call provides a number of control operations on the semaphore specified by semnum and semid. The operation to be performed is specified in cmd (see below). The fourth argument is o... |
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semget(2) -- get set of semaphores
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The semget() system call returns the semaphore identifier associated with key. A new set containing nsems semaphores is created if either key is equal to IPC_PRIVATE, or key does not have a semaphore ... |
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semop(2) -- semaphore operations
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semop() provides a number of atomic operations on a set of semaphores. The semaphore set is specified by semid, sops is an array of semaphore operations, and nsops is the number of operations in this ... |
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send(2) -- send a message from a socket
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send(), sendto(), and sendmsg() are used to transmit a message to another socket. send() may be used only when the socket is in a connected state, while sendto() and sendmsg() may be used at any time.... |
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sendmsg(2) -- send a message from a socket
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send(), sendto(), and sendmsg() are used to transmit a message to another socket. send() may be used only when the socket is in a connected state, while sendto() and sendmsg() may be used at any time.... |
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sendto(2) -- send a message from a socket
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send(), sendto(), and sendmsg() are used to transmit a message to another socket. send() may be used only when the socket is in a connected state, while sendto() and sendmsg() may be used at any time.... |
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setegid(2) -- set user and group ID
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The setuid() function sets the real and effective user IDs and the saved set-user-ID of the current process to the specified value. The setuid() function is permitted if the specified ID is equal to t... |
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seteuid(2) -- set user and group ID
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The setuid() function sets the real and effective user IDs and the saved set-user-ID of the current process to the specified value. The setuid() function is permitted if the specified ID is equal to t... |
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setgid(2) -- set user and group ID
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The setuid() function sets the real and effective user IDs and the saved set-user-ID of the current process to the specified value. The setuid() function is permitted if the specified ID is equal to t... |
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setgroups(2) -- set group access list
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setgroups() sets the group access list of the current user process according to the array gidset. The parameter ngroups indicates the number of entries in the array and must be no more than {NGROUPS_M... |
