Author: Linux Manual

getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked – nonlocking stdio functions Synopsis#include <stdio.h> int getc_unlocked(FILE *stream); int getchar_unlocked(void); int putc_unlocked(int c, FILE *stream); int putchar_unlocked(int c); void clearerr_unlocked(FILE *stream); int feof_unlocked(FILE *stream); int ferror_unlocked(FILE *stream); int fileno_unlocked(FILE *stream); int fflush_unlocked(FILE *stream); int fgetc_unlocked(FILE *stream); int fputc_unlocked(int c, FILE *stream); size_t fread_unlocked(void *ptr, size_t size, size_t n, FILE *stream);…

clearerr, feof, ferror, fileno – check and reset stream status Synopsis#include <stdio.h> void clearerr(FILE *stream); int feof(FILE *stream); int ferror(FILE *stream); int fileno(FILE *stream); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fileno(): _POSIX_C_SOURCE DescriptionThe function clearerr() clears the end-of-file and error indicators for the stream pointed to by stream. The function feof() tests the…

file_select_ex – Displays the Allegro file selector with a caption. Synopsis#include <allegro.h> int file_select_ex(const char *message, char *path, const char *ext, int size, int w, int h); DescriptionDisplays the Allegro file selector, with the message as caption. The path parameter contains the initial filename to display (this can be used to set the starting directory,…

file_exists – Tells if a file exists. Allegro game programming library. Synopsis#include <allegro.h> int file_exists(const char *filename, int attrib, int *aret); DescriptionChecks whether a file matching the given name and attributes (see beginning of this chapter) exists. If `aret’ is not NULL, it will be set to the attributes of the matching file. Example: /*…

Types – Defines#define GLOBUS_XIO_FILE_INVALID_HANDLE Enumerationsenum globus_xio_file_flag_t { GLOBUS_XIO_FILE_CREAT = O_CREAT, GLOBUS_XIO_FILE_EXCL = O_EXCL, GLOBUS_XIO_FILE_RDONLY = O_RDONLY, GLOBUS_XIO_FILE_WRONLY = O_WRONLY, GLOBUS_XIO_FILE_RDWR = O_RDWR, GLOBUS_XIO_FILE_TRUNC = O_TRUNC, GLOBUS_XIO_FILE_APPEND = O_APPEND, GLOBUS_XIO_FILE_BINARY = 0, GLOBUS_XIO_FILE_TEXT = 0 } enum globus_xio_file_mode_t { GLOBUS_XIO_FILE_IRWXU = S_IRWXU, GLOBUS_XIO_FILE_IRUSR = S_IRUSR, GLOBUS_XIO_FILE_IWUSR = S_IWUSR, GLOBUS_XIO_FILE_IXUSR = S_IXUSR, GLOBUS_XIO_FILE_IRWXO = S_IRWXO, GLOBUS_XIO_FILE_IROTH =…

Reading/Writing – Both the globus_xio_register_read() and globus_xio_register_write() calls follow similar semantics as described below. Both the globus_xio_register_read() and globus_xio_register_write() calls follow similar semantics as described below. If the waitforbytes parameter is greater than zero, the io will happen asynchronously and be completed when at least waitforbytes has been read/written. If the waitforbytes parameter is equal…

Opening/Closing – An XIO handle with the file driver can be created with globus_xio_handle_create(). An XIO handle with the file driver can be created with globus_xio_handle_create(). If there is no handle set on the attr passed to the globus_xio_open() call, it performs the equivalent of an open() call. In this case, the contact string must…

Env Variables – The file driver uses the following environment variables * GLOBUS_XIO_FILE_DEBUG Available if using a debug build.   The file driver uses the following environment variables * GLOBUS_XIO_FILE_DEBUG Available if using a debug build. See globus_debug.h for format. The File driver defines the levels TRACE for all function call tracing and INFO for…

Attributes and Cntls – File driver specific attrs and cntls. Enumerationsenum globus_xio_file_attr_cmd_t { GLOBUS_XIO_FILE_SET_MODE, GLOBUS_XIO_FILE_GET_MODE, GLOBUS_XIO_FILE_SET_FLAGS, GLOBUS_XIO_FILE_GET_FLAGS, GLOBUS_XIO_FILE_SET_TRUNC_OFFSET, GLOBUS_XIO_FILE_GET_TRUNC_OFFSET, GLOBUS_XIO_FILE_SET_HANDLE, GLOBUS_XIO_FILE_GET_HANDLE, GLOBUS_XIO_FILE_SET_BLOCKING_IO, GLOBUS_XIO_FILE_GET_BLOCKING_IO, GLOBUS_XIO_FILE_SEEK } Functionsglobus_result_t globus_xio_attr_cntl (attr, driver, GLOBUS_XIO_FILE_SET_MODE, int mode) globus_result_t globus_xio_attr_cntl (attr, driver, GLOBUS_XIO_FILE_GET_MODE, int *mode_out) globus_result_t globus_xio_attr_cntl (attr, driver, GLOBUS_XIO_FILE_SET_FLAGS, int flags) globus_result_t globus_xio_attr_cntl (attr, driver, GLOBUS_XIO_FILE_GET_FLAGS, int *flags_out) globus_result_t globus_xio_attr_cntl…

getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked – nonlocking stdio functions Synopsis#include <stdio.h> int getc_unlocked(FILE *stream); int getchar_unlocked(void); int putc_unlocked(int c, FILE *stream); int putchar_unlocked(int c); void clearerr_unlocked(FILE *stream); int feof_unlocked(FILE *stream); int ferror_unlocked(FILE *stream); int fileno_unlocked(FILE *stream); int fflush_unlocked(FILE *stream); int fgetc_unlocked(FILE *stream); int fputc_unlocked(int c, FILE *stream); size_t fread_unlocked(void *ptr, size_t size, size_t n, FILE *stream);…

fgetws – read a wide-character string from a FILE stream Synopsis#include <wchar.h> wchar_t *fgetws(wchar_t *ws, int n, FILE *stream);DescriptionThe fgetws() function is the wide-character equivalent of the fgets(3) function. It reads a string of at most n-1 wide characters into the wide-character array pointed to by ws, and adds a terminating null wide character (L’\0′)….

fgetwln – get a line of wide characters from a stream LibraryLb libbsd SynopsisIn stdio.h In bsd/wchar.h Ft wchar_t * Fn fgetwln FILE * restrict stream size_t * restrict len DescriptionThe Fn fgetwln function returns a pointer to the next line from the stream referenced by Fa stream . This line is not a standard…

getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked – nonlocking stdio functions Synopsis#include <stdio.h> int getc_unlocked(FILE *stream); int getchar_unlocked(void); int putc_unlocked(int c, FILE *stream); int putchar_unlocked(int c); void clearerr_unlocked(FILE *stream); int feof_unlocked(FILE *stream); int ferror_unlocked(FILE *stream); int fileno_unlocked(FILE *stream); int fflush_unlocked(FILE *stream); int fgetc_unlocked(FILE *stream); int fputc_unlocked(int c, FILE *stream); size_t fread_unlocked(void *ptr, size_t size, size_t n, FILE *stream);…

fgetwc, getwc – read a wide character from a FILE stream Synopsis#include <stdio.h> #include <wchar.h> wint_t fgetwc(FILE *stream); wint_t getwc(FILE *stream);DescriptionThe fgetwc() function is the wide-character equivalent of the fgetc(3) function. It reads a wide character from stream and returns it. If the end of stream is reached, or if ferror(stream) becomes true, it returns…

getspnam, getspnam_r, getspent, getspent_r, setspent, endspent, fgetspent, fgetspent_r, sgetspent, sgetspent_r, putspent, lckpwdf, ulckpwdf – get shadow password file entry Synopsis/* General shadow password file API */ #include <shadow.h> struct spwd *getspnam(const char *name); struct spwd *getspent(void); void setspent(void); void endspent(void); struct spwd *fgetspent(FILE *stream); struct spwd *sgetspent(const char *s); int putspent(const struct spwd *p, FILE…

getspnam, getspnam_r, getspent, getspent_r, setspent, endspent, fgetspent, fgetspent_r, sgetspent, sgetspent_r, putspent, lckpwdf, ulckpwdf – get shadow password file entry Synopsis/* General shadow password file API */ #include <shadow.h> struct spwd *getspnam(const char *name); struct spwd *getspent(void); void setspent(void); void endspent(void); struct spwd *fgetspent(FILE *stream); struct spwd *sgetspent(const char *s); int putspent(const struct spwd *p, FILE…

getc_unlocked, getchar_unlocked, putc_unlocked, putchar_unlocked – nonlocking stdio functions Synopsis#include <stdio.h> int getc_unlocked(FILE *stream); int getchar_unlocked(void); int putc_unlocked(int c, FILE *stream); int putchar_unlocked(int c); void clearerr_unlocked(FILE *stream); int feof_unlocked(FILE *stream); int ferror_unlocked(FILE *stream); int fileno_unlocked(FILE *stream); int fflush_unlocked(FILE *stream); int fgetc_unlocked(FILE *stream); int fputc_unlocked(int c, FILE *stream); size_t fread_unlocked(void *ptr, size_t size, size_t n, FILE *stream);…

fgetc, fgets, getc, getchar, ungetc – input of characters and strings Synopsis#include <stdio.h> int fgetc(FILE *stream); char *fgets(char *s, int size, FILE *stream); int getc(FILE *stream); int getchar(void); int ungetc(int c, FILE *stream);Descriptionfgetc() reads the next character from stream and returns it as an unsigned char cast to an int, or EOF on end of…

getpwent_r, fgetpwent_r – get passwd file entry reentrantly Synopsis#include <pwd.h> int getpwent_r(struct passwd *pwbuf, char *buf, size_t buflen, struct passwd **pwbufp); int fgetpwent_r(FILE *stream, struct passwd *pwbuf, char *buf, size_t buflen, struct passwd **pwbufp);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): getpwent_r(),     Since glibc 2.19:         _DEFAULT_SOURCE     Glibc 2.19 and earlier:         _BSD_SOURCE || _SVID_SOURCE fgetpwent_r():     Since glibc…

fgetpwent – get password file entry Synopsis#include <stdio.h> #include <sys/types.h> #include <pwd.h> struct passwd *fgetpwent(FILE *stream);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): fgetpwent():     Since glibc 2.19:         _DEFAULT_SOURCE     Glibc 2.19 and earlier:         _SVID_SOURCE DescriptionThe fgetpwent() function returns a pointer to a structure containing the broken out fields of a line in the file stream. The…