Section 3: library functions
fts, fts_open, fts_read, fts_children, fts_set, fts_close – traverse a file hierarchy Synopsis#include <sys/types.h> #include <sys/stat.h> #include <fts.h> FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **)); FTSENT *fts_read(FTS *ftsp); FTSENT *fts_children(FTS *ftsp, int instr); int fts_set(FTS *ftsp, FTSENT *f, int instr); int fts_close(FTS *ftsp);DescriptionThe fts functions are provided for traversing…
fts, fts_open, fts_read, fts_children, fts_set, fts_close – traverse a file hierarchy Synopsis#include <sys/types.h> #include <sys/stat.h> #include <fts.h> FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **)); FTSENT *fts_read(FTS *ftsp); FTSENT *fts_children(FTS *ftsp, int instr); int fts_set(FTS *ftsp, FTSENT *f, int instr); int fts_close(FTS *ftsp);DescriptionThe fts functions are provided for traversing…
fts, fts_open, fts_read, fts_children, fts_set, fts_close – traverse a file hierarchy Synopsis#include <sys/types.h> #include <sys/stat.h> #include <fts.h> FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **)); FTSENT *fts_read(FTS *ftsp); FTSENT *fts_children(FTS *ftsp, int instr); int fts_set(FTS *ftsp, FTSENT *f, int instr); int fts_close(FTS *ftsp);DescriptionThe fts functions are provided for traversing…
fts, fts_open, fts_read, fts_children, fts_set, fts_close – traverse a file hierarchy Synopsis#include <sys/types.h> #include <sys/stat.h> #include <fts.h> FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **)); FTSENT *fts_read(FTS *ftsp); FTSENT *fts_children(FTS *ftsp, int instr); int fts_set(FTS *ftsp, FTSENT *f, int instr); int fts_close(FTS *ftsp);DescriptionThe fts functions are provided for traversing…
fts, fts_open, fts_read, fts_children, fts_set, fts_close – traverse a file hierarchy Synopsis#include <sys/types.h> #include <sys/stat.h> #include <fts.h> FTS *fts_open(char * const *path_argv, int options, int (*compar)(const FTSENT **, const FTSENT **)); FTSENT *fts_read(FTS *ftsp); FTSENT *fts_children(FTS *ftsp, int instr); int fts_set(FTS *ftsp, FTSENT *f, int instr); int fts_close(FTS *ftsp);DescriptionThe fts functions are provided for traversing…
flockfile, ftrylockfile, funlockfile – lock FILE for stdio Synopsis#include <stdio.h> void flockfile(FILE *filehandle); int ftrylockfile(FILE *filehandle); void funlockfile(FILE *filehandle);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): All functions shown above: /* Since glibc 2.24: */ _POSIX_C_SOURCE >= 199309L || /* Glibc versions <= 2.23: */ _POSIX_C_SOURCE || /* Glibc versions <= 2.19: */ _BSD_SOURCE || _SVID_SOURCEDescriptionThe stdio functions are thread-safe. This is achieved by assigning to each FILE object a…
ftok – convert a pathname and a project identifier to a System V IPC key Synopsis#include <sys/types.h> #include <sys/ipc.h>key_t ftok(const char *pathname, int proj_id); DescriptionThe ftok() function uses the identity of the file named by the given pathname (which must refer to an existing, accessible file) and the least significant 8 bits of proj_id (which…
ftofix – Converts a floating point value to fixed point. Allegro game programming library. Synopsis#include <allegro.h> fixed ftofix(double x); DescriptionConverts a floating point value to fixed point. Unlike itofix(), this function clamps values which could overflow the type conversion, setting `errno’ to ERANGE in the process if this happens. Example: fixed number; number = itofix(-40000);…
ftime – return date and time Synopsis#include <sys/timeb.h> int ftime(struct timeb *tp); DescriptionNOTE: This function is deprecated, and will be removed in a future version of the GNU C library. Use clock_gettime(2) instead. This function returns the current time as seconds and milliseconds since the Epoch, 1970-01-01 00:00:00 +0000 (UTC). The time is returned in…
fseeko, ftello – seek to or report file position Synopsis#include <stdio.h> int fseeko(FILE *stream, off_t offset, int whence); off_t ftello(FILE *stream);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fseeko(), ftello(): _FILE_OFFSET_BITS == 64 || _POSIX_C_SOURCE >= 200112L (defining the obsolete _LARGEFILE_SOURCE macro also works)DescriptionThe fseeko() and ftello() functions are identical to fseek(3) and ftell(3) (see fseek(3)), respectively, except that…
fgetpos, fseek, fsetpos, ftell, rewind – reposition a stream Synopsis#include <stdio.h> int fseek(FILE *stream, long offset, int whence); long ftell(FILE *stream); void rewind(FILE *stream); int fgetpos(FILE *stream, fpos_t *pos); int fsetpos(FILE *stream, const fpos_t *pos); DescriptionThe fseek() function sets the file position indicator for the stream pointed to by stream. The new position, measured in…
fstrcolli – fuzzy comparison of two strings using the current locale Synopsis#include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR int fstrcolli(const char *string1, const char *string2); DescriptionThe strcolli() function compares the two strings sting1 and string2. The comparison is based on strings interpreted as appropriate for the program’s current locale for category LC_CTYPE. Return ValueThe…
fstrcoll – fuzzy comparison of two strings using the current locale Synopsis#include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR double fstrcoll(const char *string1, const char *string2); DescriptionThe strcoll() function compares the two strings sting1 and string2. The comparison is based on strings interpreted as appropriate for the program’s current locale for category LC_CTYPE. Return ValueThe…
fstrcmpi – fuzzy comparison of two strings Synopsis#include <fstrcmp.h> #define FSTRCMPI_IDENTICAL #define FSTRCMPI_THRESHOLD #define FSTRCMPI_ERROR int fstrcmpi(const char *string1, const char *string2); DescriptionThe fstrcmpi() function compares the two strings, string1 and string2. Return ValueThe fstrcmpi function returns an int value between 0 and FSTRCMPI_IDENTICAL. A value of 0 means the strings are utterly un-alike. A…
fstrcmp – fuzzy comparison of two strings Synopsis#include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR double fstrcmp(const char *string1, const char *string2); DescriptionThe fstrcmp() function compares the two strings, string1 and string2. Return ValueThe fstrcmp function returns a floating point value between 0.0 and FSTRCMP_IDENTICAL. A value of 0.0 means the strings are utterly un-alike….
fstrcasecmpi – fuzzy comparison of two strings ignoring case Synopsis#include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR int fstrcasecmpi(const char *string1, const char *string2); DescriptionThe fstrcmp() function compares the two strings, string1 and string2, ignoring case. Return ValueThe fstrcasecmpi function returns an int value between 0 and FSTRCMPI_IDENTICAL. A value of 0 means the strings…
fstrcasecmp – fuzzy comparison of two strings ignoring case Synopsis#include <fstrcmp.h> #define FSTRCMP_IDENTICAL #define FSTRCMP_THRESHOLD #define FSTRCMP_ERROR double fstrcasecmp(const char *string1, const char *string2); DescriptionThe fstrcmp() function compares the two strings, string1 and string2, ignoring case. Return ValueThe fstrcasecmp function returns a floating point value between 0.0 and FSTRCMP_IDENTICAL. A value of 0.0 means the…
statvfs, fstatvfs – get filesystem statistics Synopsis#include <sys/statvfs.h> int statvfs(const char *path, struct statvfs *buf); int fstatvfs(int fd, struct statvfs *buf); DescriptionThe function statvfs() returns information about a mounted filesystem. path is the pathname of any file within the mounted filesystem. buf is a pointer to a statvfs structure defined approximately as follows: struct statvfs…
fgetpos, fseek, fsetpos, ftell, rewind – reposition a stream Synopsis#include <stdio.h> int fseek(FILE *stream, long offset, int whence); long ftell(FILE *stream); void rewind(FILE *stream); int fgetpos(FILE *stream, fpos_t *pos); int fsetpos(FILE *stream, const fpos_t *pos); DescriptionThe fseek() function sets the file position indicator for the stream pointed to by stream. The new position, measured in…
setfilecon, fsetfilecon, lsetfilecon – set SELinux security context of a file Synopsis#include <selinux/selinux.h> int setfilecon(const char *path, char *con); int setfilecon_raw(const char *path, char *con); int lsetfilecon(const char *path, char *con); int lsetfilecon_raw(const char *path, char *con); int fsetfilecon(int fd, char *con); int fsetfilecon_raw(int fd, char *con); Descriptionsetfilecon() sets the security context of the file…