diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/nss_files.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/include/nss_files.h b/include/nss_files.h index 6a0dcdb85b..7bf1951496 100644 --- a/include/nss_files.h +++ b/include/nss_files.h @@ -20,6 +20,9 @@ #define _NSS_FILES_H #include <stdio.h> +#if IS_IN (libc) +#include <libc-lock.h> +#endif /* Open PATH for reading, as a data source for nss_files. */ FILE *__nss_files_fopen (const char *path); @@ -47,6 +50,63 @@ int __nss_readline_seek (FILE *fp, off64_t offset) attribute_hidden; int __nss_parse_line_result (FILE *fp, off64_t offset, int parse_line_result); libc_hidden_proto (__nss_parse_line_result) +/* Per-file data. Used by the *ent functions that need to preserve + state across calls. */ +struct nss_files_per_file_data +{ + FILE *stream; +#if IS_IN (libc) + /* The size of locks changes between libc and nss_files, so this + member must be last and is only available in libc. */ + __libc_lock_define (, lock); +#endif +}; + +/* File index for __nss_files_data_get. */ +enum nss_files_file + { + nss_file_aliasent, + nss_file_etherent, + nss_file_grent, + nss_file_hostent, + nss_file_netent, + nss_file_protoent, + nss_file_pwent, + nss_file_rpcent, + nss_file_servent, + nss_file_sgent, + nss_file_spent, + + nss_file_count + }; + +/* Obtains a pointer to the per-file data for FILE, which is written + to *PDATA, and tries to open the file at PATH for it. On success, + returns NSS_STATUS_SUCCESS, and the caller must later call + __nss_files_data_put. On failure, NSS_STATUS_TRYAGAIN is returned, + and *ERRNOP and *HERRNOP are updated if these pointers are not + null. */ +enum nss_status __nss_files_data_open (struct nss_files_per_file_data **pdata, + enum nss_files_file file, + const char *path, + int *errnop, int *herrnop); +libc_hidden_proto (__nss_files_data_open) + +/* Unlock the per-file data, previously obtained by + __nss_files_data_open. */ +void __nss_files_data_put (struct nss_files_per_file_data *data); +libc_hidden_proto (__nss_files_data_put) + +/* Performs the set*ent operation for FILE. PATH is the file to + open. */ +enum nss_status __nss_files_data_setent (enum nss_files_file file, + const char *path); +libc_hidden_proto (__nss_files_data_setent) + +/* Performs the end*ent operation for FILE. */ +enum nss_status __nss_files_data_endent (enum nss_files_file file); +libc_hidden_proto (__nss_files_data_endent) + struct parser_data; /* Instances of the parse_line function from |