diff options
Diffstat (limited to 'src/utils.c')
| -rw-r--r-- | src/utils.c | 34 |
1 files changed, 23 insertions, 11 deletions
diff --git a/src/utils.c b/src/utils.c index 8d5a432..fdc6d4a 100644 --- a/src/utils.c +++ b/src/utils.c @@ -1,4 +1,4 @@ -/* $Id: utils.c,v 1.31 2002-05-24 04:45:32 rjkaes Exp $ +/* $Id: utils.c,v 1.32 2002-05-31 18:26:30 rjkaes Exp $ * * Misc. routines which are used by the various functions to handle strings * and memory allocation and pretty much anything else we can think of. Also, @@ -138,7 +138,7 @@ indicate_http_error(struct conn_s* connptr, int number, const char* string) * Safely creates filename and returns the low-level file descriptor. */ int -create_file_safely(const char *filename) +create_file_safely(const char *filename, bool_t truncate_file) { struct stat lstatinfo; int fildes; @@ -155,7 +155,7 @@ create_file_safely(const char *filename) */ if (errno != ENOENT) { log_message(LOG_ERR, - "create_file_safely: Error checking PID file %s: %s.", + "create_file_safely: Error checking file %s: %s.", filename, strerror(errno)); return -1; } @@ -168,19 +168,24 @@ create_file_safely(const char *filename) if ((fildes = open(filename, O_RDWR | O_CREAT | O_EXCL, 0600)) < 0) { log_message(LOG_ERR, - "create_file_safely: Could not create PID file %s: %s.", + "create_file_safely: Could not create file %s: %s.", filename, strerror(errno)); return -1; } } else { struct stat fstatinfo; + int flags; + + flags = O_RDWR; + if (!truncate_file) + flags |= O_APPEND; /* * Open an existing file. */ - if ((fildes = open(filename, O_RDWR)) < 0) { + if ((fildes = open(filename, flags)) < 0) { log_message(LOG_ERR, - "create_file_safely: Could not open PID file %s: %s.", + "create_file_safely: Could not open file %s: %s.", filename, strerror(errno)); return -1; } @@ -194,7 +199,7 @@ create_file_safely(const char *filename) || lstatinfo.st_ino != fstatinfo.st_ino || lstatinfo.st_dev != fstatinfo.st_dev) { log_message(LOG_ERR, - "create_file_safely: The PID file %s has been changed before it could be opened.", + "create_file_safely: The file %s has been changed before it could be opened.", filename); close(fildes); return -1; @@ -209,13 +214,20 @@ create_file_safely(const char *filename) */ if (fstatinfo.st_nlink > 1 || !S_ISREG(lstatinfo.st_mode)) { log_message(LOG_ERR, - "create_file_safely: The PID file %s has too many links, or is not a regular file: %s.", + "create_file_safely: The file %s has too many links, or is not a regular file: %s.", filename, strerror(errno)); close(fildes); return -1; } /* + * Just return the file descriptor if we _don't_ want the file + * truncated. + */ + if (!truncate_file) + return fildes; + + /* * On systems which don't support ftruncate() the best we can * do is to close the file and reopen it in create mode, which * unfortunately leads to a race condition, however "systems @@ -230,7 +242,7 @@ create_file_safely(const char *filename) if ((fildes = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0600)) < 0) { log_message(LOG_ERR, - "create_file_safely: Could not open PID file %s: %s.", + "create_file_safely: Could not open file %s: %s.", filename, strerror(errno)); return -1; } @@ -252,7 +264,7 @@ pidfile_create(const char *filename) /* * Create a new file */ - if ((fildes = create_file_safely(filename)) < 0) + if ((fildes = create_file_safely(filename, TRUE)) < 0) exit(1); /* @@ -306,7 +318,7 @@ rotate_log_files(void) rename(config.logf_name, rename_file); - log_file_des = create_file_safely(config.logf_name); + log_file_des = create_file_safely(config.logf_name, TRUE); if (log_file_des < 0) { log_message(LOG_CRIT, "Could not properly create the new log file; therefore the log has not been rotated."); |