int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp) { DBM *db; db = dbm_open(map, O_RDONLY, 0); if (db) { struct stat stb; int error; #ifdef DBM_SUFFIX char dbfilename[256]; xstrlcpy(dbfilename, map, sizeof(dbfilename)); xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename)); error = stat(dbfilename, &stb); #else /* not DBM_SUFFIX */ error = fstat(dbm_pagfno(db), &stb); #endif /* not DBM_SUFFIX */ if (!error && *tp < stb.st_mtime) { *tp = stb.st_mtime; error = -1; } else { error = search_ndbm(m, db, key, pval); } (void) dbm_close(db); return error; } return errno; }
int ndbm_init(mnt_map *m, char *map, time_t *tp) { DBM *db; db = dbm_open(map, O_RDONLY, 0); if (db) { struct stat stb; int error; #ifdef DBM_SUFFIX char dbfilename[256]; xstrlcpy(dbfilename, map, sizeof(dbfilename)); xstrlcat(dbfilename, DBM_SUFFIX, sizeof(dbfilename)); error = stat(dbfilename, &stb); #else /* not DBM_SUFFIX */ error = fstat(dbm_pagfno(db), &stb); #endif /* not DBM_SUFFIX */ if (error < 0) *tp = clocktime(NULL); else *tp = stb.st_mtime; dbm_close(db); return 0; } return errno; }
int _ndbm_get_fd (mu_dbm_file_t db, int *pag, int *dir) { DBM *dbm = db->db_descr; *pag = dbm_pagfno (dbm); if (dir) *dir = dbm_dirfno (dbm); return 0; }
int ndbm_init(char *map, time_t *tp) { DBM *db; db = dbm_open(map, O_RDONLY, 0); if (db) { struct stat stb; if (fstat(dbm_pagfno(db), &stb) < 0) *tp = clocktime(); else *tp = stb.st_mtime; dbm_close(db); return 0; } return errno; }
int ndbm_search(mnt_map *m, char *map, char *key, char **pval, time_t *tp) { DBM *db; db = dbm_open(map, O_RDONLY, 0); if (db) { struct stat stb; int error; error = fstat(dbm_pagfno(db), &stb); if (!error && *tp < stb.st_mtime) { *tp = stb.st_mtime; error = -1; } else { error = search_ndbm(db, key, pval); } (void) dbm_close(db); return error; } return errno; }
/* * call-seq: * DBM.new(filename[, mode[, flags]]) -> dbm * * Open a dbm database with the specified name, which can include a directory * path. Any file extensions needed will be supplied automatically by the dbm * library. For example, Berkeley DB appends '.db', and GNU gdbm uses two * physical files with extensions '.dir' and '.pag'. * * The mode should be an integer, as for Unix chmod. * * Flags should be one of READER, WRITER, WRCREAT or NEWDB. */ static VALUE fdbm_initialize(int argc, VALUE *argv, VALUE obj) { volatile VALUE file; VALUE vmode, vflags; DBM *dbm; struct dbmdata *dbmp; int mode, flags = 0; if (rb_scan_args(argc, argv, "12", &file, &vmode, &vflags) == 1) { mode = 0666; /* default value */ } else if (NIL_P(vmode)) { mode = -1; /* return nil if DB not exist */ } else { mode = NUM2INT(vmode); } if (!NIL_P(vflags)) flags = NUM2INT(vflags); FilePathValue(file); /* * Note: * gdbm 1.10 works with O_CLOEXEC. gdbm 1.9.1 silently ignore it. */ #ifndef O_CLOEXEC # define O_CLOEXEC 0 #endif if (flags & RUBY_DBM_RW_BIT) { flags &= ~RUBY_DBM_RW_BIT; dbm = dbm_open(RSTRING_PTR(file), flags|O_CLOEXEC, mode); } else { dbm = 0; if (mode >= 0) { dbm = dbm_open(RSTRING_PTR(file), O_RDWR|O_CREAT|O_CLOEXEC, mode); } if (!dbm) { dbm = dbm_open(RSTRING_PTR(file), O_RDWR|O_CLOEXEC, 0); } if (!dbm) { dbm = dbm_open(RSTRING_PTR(file), O_RDONLY|O_CLOEXEC, 0); } } if (dbm) { /* * History of dbm_pagfno() and dbm_dirfno() in ndbm and its compatibles. * (dbm_pagfno() and dbm_dirfno() is not standardized.) * * 1986: 4.3BSD provides ndbm. * It provides dbm_pagfno() and dbm_dirfno() as macros. * 1991: gdbm-1.5 provides them as functions. * They returns a same descriptor. * (Earlier releases may have the functions too.) * 1991: Net/2 provides Berkeley DB. * It doesn't provide dbm_pagfno() and dbm_dirfno(). * 1992: 4.4BSD Alpha provides Berkeley DB with dbm_dirfno() as a function. * dbm_pagfno() is a macro as DBM_PAGFNO_NOT_AVAILABLE. * 1997: Berkeley DB 2.0 is released by Sleepycat Software, Inc. * It defines dbm_pagfno() and dbm_dirfno() as macros. * 2011: gdbm-1.9 creates a separate dir file. * dbm_pagfno() and dbm_dirfno() returns different descriptors. */ #if defined(HAVE_DBM_PAGFNO) rb_fd_fix_cloexec(dbm_pagfno(dbm)); #endif #if defined(HAVE_DBM_DIRFNO) rb_fd_fix_cloexec(dbm_dirfno(dbm)); #endif #if defined(RUBYDBM_DB_HEADER) && defined(HAVE_TYPE_DBC) /* Disable Berkeley DB error messages such as: * DB->put: attempt to modify a read-only database */ ((DBC*)dbm)->dbp->set_errfile(((DBC*)dbm)->dbp, NULL); #endif } if (!dbm) { if (mode == -1) return Qnil; rb_sys_fail_str(file); } dbmp = ALLOC(struct dbmdata); DATA_PTR(obj) = dbmp; dbmp->di_dbm = dbm; dbmp->di_size = -1; return obj; }