diff options
| -rw-r--r-- | include/libfile.h | 2 | ||||
| -rw-r--r-- | lib/libfile.c | 27 |
2 files changed, 29 insertions, 0 deletions
diff --git a/include/libfile.h b/include/libfile.h index dd0b00f988..6dbb81a241 100644 --- a/include/libfile.h +++ b/include/libfile.h @@ -26,4 +26,6 @@ int make_directory(const char *pathname); int unlink_recursive(const char *path, char **failedpath); +char *make_temp(const char *template); + #endif /* __LIBFILE_H */ diff --git a/lib/libfile.c b/lib/libfile.c index 6b70306dbd..79054eb5ac 100644 --- a/lib/libfile.c +++ b/lib/libfile.c @@ -20,6 +20,7 @@ #include <malloc.h> #include <libfile.h> #include <progress.h> +#include <stdlib.h> #include <linux/stat.h> /* @@ -485,3 +486,29 @@ int open_and_lseek(const char *filename, int mode, loff_t pos) return fd; } + +/** + * make_temp - create a name for a temporary file + * @template: The filename prefix + * + * This function creates a name for a temporary file. @template is used as a + * template for the name which gets appended a 8-digit hexadecimal number to + * create a unique filename. + * + * Return: This function returns a filename which can be used as a temporary + * file lateron. The returned filename must be freed by the caller. + */ +char *make_temp(const char *template) +{ + char *name = NULL; + struct stat s; + int ret; + + do { + free(name); + name = basprintf("/tmp/%s-%08x", template, random32()); + ret = stat(name, &s); + } while (!ret); + + return name; +} |