diff options
Diffstat (limited to 'src/dt/common.h')
| -rw-r--r-- | src/dt/common.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/dt/common.h b/src/dt/common.h index bc5fb02..720180d 100644 --- a/src/dt/common.h +++ b/src/dt/common.h @@ -161,6 +161,27 @@ static inline char *xstrdup(const char *s) return p; } +static inline char *xstrndup(const char *s, size_t n) +{ + int m; + char *t; + + /* We can just xmalloc(n+1) and strncpy into it, */ + /* but think about xstrndup("abc", 10000) wastage! */ + m = n; + t = (char*) s; + while (m) { + if (!*t) break; + m--; + t++; + } + n -= m; + t = xmalloc(n + 1); + t[n] = '\0'; + + return memcpy(t, s, n); +} + static inline int erase(int fd, size_t count, loff_t offset) { struct erase_info_user erase = { |