diff options
Diffstat (limited to 'include/nss_files.h')
| -rw-r--r-- | include/nss_files.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/include/nss_files.h b/include/nss_files.h index d0f26815b5..f45ea02dc0 100644 --- a/include/nss_files.h +++ b/include/nss_files.h @@ -25,6 +25,28 @@ FILE *__nss_files_fopen (const char *path); libc_hidden_proto (__nss_files_fopen) +/* Read a line from FP, storing it BUF. Strip leading blanks and skip + comments. Sets errno and returns error code on failure. Special + failure: ERANGE means the buffer is too small. The function writes + the original offset to *POFFSET (which can be negative in the case + of non-seekable input). */ +int __nss_readline (FILE *fp, char *buf, size_t len, off64_t *poffset); +libc_hidden_proto (__nss_readline) + +/* Seek FP to OFFSET. Sets errno and returns error code on failure. + On success, sets errno to ERANGE and returns ERANGE (to indicate + re-reading of the same input line to the caller). If OFFSET is + negative, fail with ESPIPE without seeking. Intended to be used + after parsing data read by __nss_readline failed with ERANGE. */ +int __nss_readline_seek (FILE *fp, off64_t offset) attribute_hidden; + +/* Handles the result of a parse_line call (as defined by + nss/nss_files/files-parse.c). Adjusts the file offset of FP as + necessary. Returns 0 on success, and updates errno on failure (and + returns that error code). */ +int __nss_parse_line_result (FILE *fp, off64_t offset, int parse_line_result); +libc_hidden_proto (__nss_parse_line_result) + struct parser_data; /* Instances of the parse_line function from @@ -52,4 +74,11 @@ libnss_files_hidden_proto (_nss_files_parse_servent) libc_hidden_proto (_nss_files_parse_sgent) libc_hidden_proto (_nss_files_parse_spent) +/* Generic implementation of fget*ent_r. Reads lines from FP until + EOF or a successful parse into *RESULT using PARSER. Returns 0 on + success, ENOENT on EOF, ERANGE on too-small buffer. */ +int __nss_fgetent_r (FILE *fp, void *result, + char *buffer, size_t buffer_length, + nss_files_parse_line parser) attribute_hidden; + #endif /* _NSS_FILES_H */ |