Teach pw(8) about how to use pw/gr API to reduce code duplication

MFC after:	2 months

1 files changed, 0 insertions, 135 deletions

diff --git a/pw/fileupd.c b/pw/fileupd.c
index b88f4fa..7df4bb1 100644
--- a/pw/fileupd.c
+++ b/pw/fileupd.c
@@ -66,138 +66,3 @@ extendarray(char ***buf, int * buflen, int needed)
 	}
 	return *buflen;
 }
-
-
-int
-fileupdate(char const * filename, mode_t fmode, char const * newline, char const * prefix, int pfxlen, int updmode)
-{
-	int     rc = 0;
-
-	if (pfxlen <= 1)
-		rc = EINVAL;
-	else {
-		int    infd = open(filename, O_RDWR | O_CREAT | O_EXLOCK, fmode);
-
-		if (infd == -1)
-			rc = errno;
-		else {
-			FILE   *infp = fdopen(infd, "r+");
-
-			if (infp == NULL) {
-				rc = errno;		/* Assumes fopen(3) sets errno from open(2) */
-				close(infd);
-			} else {
-				int       outfd;
-				char      file[MAXPATHLEN];
-
-				strcpy(file, filename);
-				strcat(file, ".new");
-				outfd = open(file, O_RDWR | O_CREAT | O_TRUNC, fmode);
-				if (outfd == -1)
-					rc = errno;
-				else {
-					FILE    *outfp = fdopen(outfd, "w+");
-
-					if (outfp == NULL) {
-						rc = errno;
-						close(outfd);
-					} else {
-						int   updated = UPD_CREATE;
-						int		linesize = PWBUFSZ;
-						char  *line = malloc(linesize);
-
-					nextline:
-						while (fgets(line, linesize, infp) != NULL) {
-							char  *p = strchr(line, '\n');
-
-							while ((p = strchr(line, '\n')) == NULL) {
-								int	l;
-								if (extendline(&line, &linesize, linesize + PWBUFSZ) == -1) {
-									int	ch;
-									fputs(line, outfp);
-									while ((ch = fgetc(infp)) != EOF) {
-										fputc(ch, outfp);
-										if (ch == '\n')
-											break;
-									}
-									goto nextline;
-								}
-								l = strlen(line);
-								if (fgets(line + l, linesize - l, infp) == NULL)
-									break;
-							}
-							if (*line != '#' && *line != '\n') {
-								if (!updated && strncmp(line, prefix, pfxlen) == 0) {
-									updated = updmode == UPD_REPLACE ? UPD_REPLACE : UPD_DELETE;
-
-									/*
-									 * Only actually write changes if updating
-									 */
-									if (updmode == UPD_REPLACE)
-										strcpy(line, newline);
-									else if (updmode == UPD_DELETE)
-										continue;
-								}
-							}
-							fputs(line, outfp);
-						}
-
-						/*
-						 * Now, we need to decide what to do: If we are in
-						 * update mode, and no record was updated, then error If
-						 * we are in insert mode, and record already exists,
-						 * then error
-						 */
-						if (updmode != updated)
-							/* -1 return means:
-							 * update,delete=no user entry
-							 * create=entry exists
-							 */
-							rc = -1;
-						else {
-
-							/*
-							 * If adding a new record, append it to the end
-							 */
-							if (updmode == UPD_CREATE)
-								fputs(newline, outfp);
-
-							/*
-							 * Flush the file and check for the result
-							 */
-							if (fflush(outfp) == EOF)
-								rc = errno;	/* Failed to update */
-							else {
-								/*
-								 * Copy data back into the
-								 * original file and truncate
-								 */
-								rewind(infp);
-								rewind(outfp);
-								while (fgets(line, linesize, outfp) != NULL)
-									fputs(line, infp);
-
-								/*
-								 * If there was a problem with copying
-								 * we will just rename 'file.new' 
-								 * to 'file'.
-								 * This is a gross hack, but we may have
-								 * corrupted the original file
-								 */
-								if (fflush(infp) == EOF || ferror(infp))
-									rename(file, filename);
-								else
-									ftruncate(infd, ftell(infp));
-							}
-						}
-						free(line);
-						fclose(outfp);
-					}
-					remove(file);
-				}
-				fclose(infp);
-			}
-		}
-	}
-	return rc;
-}