diff options
Diffstat (limited to 'libbb/read.c')
| -rw-r--r-- | libbb/read.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/libbb/read.c b/libbb/read.c index 575446536..9c025e3a3 100644 --- a/libbb/read.c +++ b/libbb/read.c @@ -152,13 +152,14 @@ char *reads(int fd, char *buffer, size_t size) // Read one line a-la fgets. Reads byte-by-byte. // Useful when it is important to not read ahead. // Bytes are appended to pfx (which must be malloced, or NULL). -char *xmalloc_reads(int fd, char *buf) +char *xmalloc_reads(int fd, char *buf, size_t *maxsz_p) { char *p; - int sz = buf ? strlen(buf) : 0; + size_t sz = buf ? strlen(buf) : 0; + size_t maxsz = maxsz_p ? *maxsz_p : MAXINT(size_t); goto jump_in; - while (1) { + while (sz < maxsz) { if (p - buf == sz) { jump_in: buf = xrealloc(buf, sz + 128); @@ -178,6 +179,8 @@ char *xmalloc_reads(int fd, char *buf) p++; } *p++ = '\0'; + if (maxsz_p) + *maxsz_p = p - buf - 1; return xrealloc(buf, p - buf); } |