SysTutorials Posts

ldns_buffer_new, ldns_buffer_new_frm_data, ldns_buffer_clear, ldns_buffer_printf, ldns_buffer_free, ldns_buffer_export Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> ldns_buffer* ldns_buffer_new(size_t capacity); void ldns_buffer_new_frm_data(ldns_buffer *buffer, void *data, size_t size); void ldns_buffer_clear(ldns_buffer *buffer); int ldns_buffer_printf(ldns_buffer *buffer, const char *format, …); void ldns_buffer_free(ldns_buffer *buffer); void* ldns_buffer_export(ldns_buffer *buffer); Description ldns_buffer_new() creates a new buffer with the specified capacity. .br capacity: the size (in bytes) to…

ldns_buffer_limit, ldns_buffer_set_limit, ldns_buffer_capacity, ldns_buffer_set_capacity, ldns_buffer_reserve, ldns_buffer_at, ldns_buffer_begin, ldns_buffer_end, ldns_buffer_current Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> size_t ldns_buffer_limit(ldns_buffer *buffer); void ldns_buffer_set_limit(ldns_buffer *buffer, size_t limit); size_t ldns_buffer_capacity(ldns_buffer *buffer); bool ldns_buffer_set_capacity(ldns_buffer *buffer, size_t capacity); bool ldns_buffer_reserve(ldns_buffer *buffer, size_t amount); uint8_t * ldns_buffer_at(const ldns_buffer *buffer, size_t at); uint8_t * ldns_buffer_begin(const ldns_buffer *buffer); uint8_t * ldns_buffer_end(ldns_buffer *buffer); uint8_t * ldns_buffer_current(ldns_buffer…

ldns_buffer_limit, ldns_buffer_set_limit, ldns_buffer_capacity, ldns_buffer_set_capacity, ldns_buffer_reserve, ldns_buffer_at, ldns_buffer_begin, ldns_buffer_end, ldns_buffer_current Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> size_t ldns_buffer_limit(ldns_buffer *buffer); void ldns_buffer_set_limit(ldns_buffer *buffer, size_t limit); size_t ldns_buffer_capacity(ldns_buffer *buffer); bool ldns_buffer_set_capacity(ldns_buffer *buffer, size_t capacity); bool ldns_buffer_reserve(ldns_buffer *buffer, size_t amount); uint8_t * ldns_buffer_at(const ldns_buffer *buffer, size_t at); uint8_t * ldns_buffer_begin(const ldns_buffer *buffer); uint8_t * ldns_buffer_end(ldns_buffer *buffer); uint8_t * ldns_buffer_current(ldns_buffer…

ldns_buffer_remaining_at, ldns_buffer_remaining, ldns_buffer_available_at, ldns_buffer_available, ldns_buffer_status, ldns_buffer_status_ok Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> size_t ldns_buffer_remaining_at(ldns_buffer *buffer, size_t at); size_t ldns_buffer_remaining(ldns_buffer *buffer); int ldns_buffer_available_at(ldns_buffer *buffer, size_t at, size_t count); int ldns_buffer_available(ldns_buffer *buffer, size_t count); ldns_status ldns_buffer_status(ldns_buffer *buffer); bool ldns_buffer_status_ok(ldns_buffer *buffer); Description ldns_buffer_remaining_at() returns the number of bytes remaining between the indicated position and the limit. .br buffer:…

ldns_buffer_remaining_at, ldns_buffer_remaining, ldns_buffer_available_at, ldns_buffer_available, ldns_buffer_status, ldns_buffer_status_ok Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> size_t ldns_buffer_remaining_at(ldns_buffer *buffer, size_t at); size_t ldns_buffer_remaining(ldns_buffer *buffer); int ldns_buffer_available_at(ldns_buffer *buffer, size_t at, size_t count); int ldns_buffer_available(ldns_buffer *buffer, size_t count); ldns_status ldns_buffer_status(ldns_buffer *buffer); bool ldns_buffer_status_ok(ldns_buffer *buffer); Description ldns_buffer_remaining_at() returns the number of bytes remaining between the indicated position and the limit. .br buffer:…

ldns_buffer_limit, ldns_buffer_set_limit, ldns_buffer_capacity, ldns_buffer_set_capacity, ldns_buffer_reserve, ldns_buffer_at, ldns_buffer_begin, ldns_buffer_end, ldns_buffer_current Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> size_t ldns_buffer_limit(ldns_buffer *buffer); void ldns_buffer_set_limit(ldns_buffer *buffer, size_t limit); size_t ldns_buffer_capacity(ldns_buffer *buffer); bool ldns_buffer_set_capacity(ldns_buffer *buffer, size_t capacity); bool ldns_buffer_reserve(ldns_buffer *buffer, size_t amount); uint8_t * ldns_buffer_at(const ldns_buffer *buffer, size_t at); uint8_t * ldns_buffer_begin(const ldns_buffer *buffer); uint8_t * ldns_buffer_end(ldns_buffer *buffer); uint8_t * ldns_buffer_current(ldns_buffer…

ldns_buffer2pkt_wire Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> ldns_status ldns_buffer2pkt_wire(ldns_pkt **packet, ldns_buffer *buffer); Description ldns_buffer2pkt_wire() converts the data on the uint8_t bytearray (in wire format) to a DNS packet. This function will initialize and allocate memory space for the packet structure. .br packet: pointer to the structure to hold the packet .br buffer: the buffer with…

ldns_buffer Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> Description ldns_buffer implementation of buffers to ease operations ldns_buffers can contain arbitrary information, per octet. You can write to the current end of a buffer, read from the current position, and access any data within it. Example use of buffers is in the source code of \ref host2str.c…

ldns_bget_token, ldns_bgetc, ldns_bskipcs Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> ssize_t ldns_bget_token(ldns_buffer *b, char *token, const char *delim, size_t limit); int ldns_bgetc(ldns_buffer *buffer); void ldns_bskipcs(ldns_buffer *buffer, const char *s); Description ldns_bget_token() returns a token/char from the buffer b. This function deals with ( and ) in the buffer, and ignores when it finds them. .br *b:…

ldns_bget_token, ldns_bgetc, ldns_bskipcs Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> ssize_t ldns_bget_token(ldns_buffer *b, char *token, const char *delim, size_t limit); int ldns_bgetc(ldns_buffer *buffer); void ldns_bskipcs(ldns_buffer *buffer, const char *s); Description ldns_bget_token() returns a token/char from the buffer b. This function deals with ( and ) in the buffer, and ignores when it finds them. .br *b:…

ldns_bget_token, ldns_bgetc, ldns_bskipcs Synopsis#include <stdint.h> #include <stdbool.h> #include <ldns/ldns.h> ssize_t ldns_bget_token(ldns_buffer *b, char *token, const char *delim, size_t limit); int ldns_bgetc(ldns_buffer *buffer); void ldns_bskipcs(ldns_buffer *buffer, const char *s); Description ldns_bget_token() returns a token/char from the buffer b. This function deals with ( and ) in the buffer, and ignores when it finds them. .br *b:…

system_data_types – overview of system data types Descriptionaiocb Include: <aio.h>. struct aiocb {     int             aio_fildes;    /* File descriptor */     off_t           aio_offset;    /* File offset */     volatile void  *aio_buf;       /* Location of buffer */     size_t          aio_nbytes;    /* Length of transfer */     int             aio_reqprio;   /* Request priority offset */     struct sigevent aio_sigevent;  /* Signal number and value */     int             aio_lio_opcode;/* Operation to be performed */ }; For further information about this structure, see aio(7). Conforming to: POSIX.1-2001 and later. See also: aio_cancel(3), aio_error(3),…

div, ldiv, lldiv, imaxdiv – compute quotient and remainder of an integer division Synopsis#include <stdlib.h> div_t div(int numerator, int denominator); ldiv_t ldiv(long numerator, long denominator); lldiv_t lldiv(long long numerator, long long denominator); #include <inttypes.h> imaxdiv_t imaxdiv(intmax_t numerator, intmax_t denominator);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): lldiv(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112LDescriptionThe div() function computes the value…

ldif_read_file_state – SynopsisData FieldsFILE * f size_t line_no AuthorGenerated automatically by Doxygen for LDB from the source code.

ldexp, ldexpf, ldexpl – multiply floating-point number by integral power of 2 Synopsis#include <math.h> double ldexp(double x, int exp); float ldexpf(float x, int exp); long double ldexpl(long double x, int exp);Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): ldexpf(), ldexpl(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L     || /* Since glibc 2.19: */ _DEFAULT_SOURCE     || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCEDescriptionThese functions return the…

ldexp, ldexpf, ldexpl – multiply floating-point number by integral power of 2 Synopsis#include <math.h> double ldexp(double x, int exp); float ldexpf(float x, int exp); long double ldexpl(long double x, int exp);Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): ldexpf(), ldexpl(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L     || /* Since glibc 2.19: */ _DEFAULT_SOURCE     || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCEDescriptionThese functions return the…

ldexp, ldexpf, ldexpl – multiply floating-point number by integral power of 2 Synopsis#include <math.h> double ldexp(double x, int exp); float ldexpf(float x, int exp); long double ldexpl(long double x, int exp);Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): ldexpf(), ldexpl(): _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L     || /* Since glibc 2.19: */ _DEFAULT_SOURCE     || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCEDescriptionThese functions return the…

ldb_vlv_resp_control – SynopsisData Fieldsint targetPosition int contentCount int vlv_result int ctxid_len char * contextId AuthorGenerated automatically by Doxygen for LDB from the source code.

ldb_vlv_req_control – SynopsisData Fieldsint beforeCount int afterCount int type union { struct { int offset int contentCount } byOffset struct { int value_len char * value } gtOrEq } match int ctxid_len char * contextId AuthorGenerated automatically by Doxygen for LDB from the source code.

ldb_verify_name_control – SynopsisData Fieldsint flags size_t gc_len char * gc AuthorGenerated automatically by Doxygen for LDB from the source code.