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sysdecode_mask(3) FreeBSD Library Functions Manual sysdecode_mask(3) NAME sysdecode_mask, sysdecode_accessmode, sysdecode_atflags, sysdecode_capfcntlrights, sysdecode_close_range_flags, sysdecode_fcntl_fileflags, sysdecode_fileflags, sysdecode_filemode, sysdecode_flock_operation, sysdecode_mlockall_flags, sysdecode_mmap_flags, sysdecode_mmap_prot, sysdecode_mount_flags, sysdecode_msg_flags, sysdecode_msync_flags, sysdecode_open_flags, sysdecode_pipe2_flags, sysdecode_reboot_howto, sysdecode_rfork_flags, sysdecode_semget_flags, sysdecode_sendfile_flags, sysdecode_shmat_flags, sysdecode_sctp_nxt_flags, sysdecode_sctp_rcv_flags, sysdecode_sctp_snd_flags, sysdecode_socket_type, sysdecode_thr_create_flags, sysdecode_umtx_cvwait_flags, sysdecode_umtx_rwlock_flags, sysdecode_vmprot, sysdecode_wait4_options, sysdecode_wait6_options -- print name of various bitmask values LIBRARY library "libsysdecode" SYNOPSIS #include <sys/types.h> #include <stdbool.h> #include <stdio.h> #include <sysdecode.h> bool sysdecode_access_mode(FILE *fp, int mode, int *rem); bool sysdecode_atflags(FILE *fp, int flags, int *rem); bool sysdecode_cap_fcntlrights(FILE *fp, uint32_t rights, uint32_t *rem); bool sysdecode_close_range_flags(FILE *fp, int flags, int *rem); bool sysdecode_fcntl_fileflags(FILE *fp, int flags, int *rem); bool sysdecode_fileflags(FILE *fp, fflags_t flags, fflags_t *rem); bool sysdecode_filemode(FILE *fp, int mode, int *rem); bool sysdecode_flock_operation(FILE *fp, int operation, int *rem); bool sysdecode_mlockall_flags(FILE *fp, int flags, int *rem); bool sysdecode_mmap_flags(FILE *fp, int flags, int *rem); bool sysdecode_mmap_prot(FILE *fp, int prot, int *rem); bool sysdecode_mount_flags(FILE *fp, int flags, int *rem); bool sysdecode_msg_flags(FILE *fp, int flags, int *rem); bool sysdecode_msync_flags(FILE *fp, int flags, int *rem); bool sysdecode_open_flags(FILE *fp, int flags, int *rem); bool sysdecode_pipe2_flags(FILE *fp, int flags, int *rem); bool sysdecode_reboot_howto(FILE *fp, int howto, int *rem); bool sysdecode_rfork_flags(FILE *fp, int flags, int *rem); bool sysdecode_sctp_nxt_flags(FILE *fp, int flags, int *rem); bool sysdecode_sctp_rcv_flags(FILE *fp, int flags, int *rem); bool sysdecode_sctp_snd_flags(FILE *fp, int flags, int *rem); bool sysdecode_semget_flags(FILE *fp, int flags, int *rem); bool sysdecode_sendfile_flags(FILE *fp, int flags, int *rem); bool sysdecode_shmat_flags(FILE *fp, int flags, int *rem); bool sysdecode_socket_type(FILE *fp, int type, int *rem); bool sysdecode_thr_create_flags(FILE *fp, int flags, int *rem); bool sysdecode_umtx_cvwait_flags(FILE *fp, u_long flags, u_long *rem); bool sysdecode_umtx_rwlock_flags(FILE *fp, u_long flags, u_long *rem); bool sysdecode_vmprot(FILE *fp, int type, int *rem); bool sysdecode_wait4_options(FILE *fp, int options, int *rem); bool sysdecode_wait6_options(FILE *fp, int options, int *rem); DESCRIPTION The sysdecode_mask functions are used to generate a text description of an integer value built from a mask of bitfields. The text description lists the C macros for field values joined by pipe `|' characters match- ing the format used in C source code. Most of the values decoded by these functions are passed as arguments to system calls, though some of these values are used internally in the kernel. Each function writes the text description to fp. The second argument should contain the integer value to be decoded. The rem argument is set to the value of any bits that were not decoded (bit fields that do not have a corresponding C macro). rem may be set to NULL if the caller does not need this value. Each function returns true if any bit fields in the value were decoded and false if no bit fields were decoded. Most of these functions decode an argument passed to a system call: Function System Call Argument sysdecode_access_mode() access(2) mode sysdecode_atflags() chflagsat(2), fstatat(2) atflag, flag sysdecode_cap_fcntlrights() cap_fcntls_limit(2) fcntlrights sysdecode_fileflags() chflags(2) flags sysdecode_filemode() chmod(2), open(2) mode sysdecode_flock_operation() flock(2) operation sysdecode_mlockall_flags() mlockall(2) flags sysdecode_mmap_flags() mmap(2) flags sysdecode_mmap_prot() mmap(2) prot sysdecode_mount_flags() mount(2) flags sysdecode_msg_flags() recv(2), send(2) flags sysdecode_msync_flags() msync(2) flags sysdecode_open_flags() open(2) flags sysdecode_pipe2_flags() pipe2 flags sysdecode_reboot_howto() reboot(2) howto sysdecode_rfork_flags() rfork(2) flags sysdecode_semget_flags() semget(2) flags sysdecode_sendfile_flags() sendfile(2) flags sysdecode_shmat_flags() shmat(2) flags sysdecode_socket_type() socket(2) type sysdecode_thr_create_flags() thr_create(2) flags sysdecode_wait4_options() wait4(2) options sysdecode_wait6_options() wait6(2) options Other functions decode the values described below: sysdecode_fcntl_fileflags() The file flags used with the F_GETFL and F_SETFL fcntl(2) commands. sysdecode_sctp_nxt_flags() The nxt_flags member of a struct sctp_nxtinfo. sysdecode_sctp_rcv_flags() The rcv_flags member of a struct sctp_rcvinfo. sysdecode_sctp_snd_flags() The snd_flags member of a struct sctp_sndinfo. sysdecode_umtx_cvwait_flags() The val argument to _umtx_op(2) for UMTX_OP_CV_WAIT operations. sysdecode_umtx_rwlock_flags() The val argument to _umtx_op(2) for UMTX_OP_RW_RDLOCK operations. sysdecode_vmprot() The memory protection flags stored in vm_prot_t variables. RETURN VALUES The sysdecode_mask functions return true if any bit fields in the value were decoded and false if no bit fields were decoded. SEE ALSO sysdecode(3), sysdecode_enum(3) FreeBSD 13.0 March 3, 2022 FreeBSD 13.0
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | SEE ALSO
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