diff options
Diffstat (limited to 'wrapper.c')
| -rw-r--r-- | wrapper.c | 32 |
1 files changed, 31 insertions, 1 deletions
@@ -145,6 +145,18 @@ void *xcalloc(size_t nmemb, size_t size) return ret; } +void xsetenv(const char *name, const char *value, int overwrite) +{ + if (setenv(name, value, overwrite)) + die_errno(_("could not setenv '%s'"), name ? name : "(null)"); +} + +void xunsetenv(const char *name) +{ + if (!unsetenv(name)) + die_errno(_("could not unsetenv '%s'"), name ? name : "(null)"); +} + /* * Limit size of IO chunks, because huge chunks only cause pain. OS X * 64-bit is buggy, returning EINVAL if len >= INT_MAX; and even in @@ -193,7 +205,9 @@ int xopen(const char *path, int oflag, ...) if (errno == EINTR) continue; - if ((oflag & O_RDWR) == O_RDWR) + if ((oflag & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) + die_errno(_("unable to create '%s'"), path); + else if ((oflag & O_RDWR) == O_RDWR) die_errno(_("could not open '%s' for reading and writing"), path); else if ((oflag & O_WRONLY) == O_WRONLY) die_errno(_("could not open '%s' for writing"), path); @@ -678,3 +692,19 @@ int is_empty_or_missing_file(const char *filename) return !st.st_size; } + +int open_nofollow(const char *path, int flags) +{ +#ifdef O_NOFOLLOW + return open(path, flags | O_NOFOLLOW); +#else + struct stat st; + if (lstat(path, &st) < 0) + return -1; + if (S_ISLNK(st.st_mode)) { + errno = ELOOP; + return -1; + } + return open(path, flags); +#endif +} |