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fix system breakage window during make install due to permissions
[musl]
/
src
/
stdio
/
fgets.c
diff --git
a/src/stdio/fgets.c
b/src/stdio/fgets.c
index
7939303
..
b01a418
100644
(file)
--- a/
src/stdio/fgets.c
+++ b/
src/stdio/fgets.c
@@
-1,18
+1,24
@@
#include "stdio_impl.h"
#include "stdio_impl.h"
+#include <string.h>
#define MIN(a,b) ((a)<(b) ? (a) : (b))
#define MIN(a,b) ((a)<(b) ? (a) : (b))
-char *fgets(char *
s, int n, FILE *
f)
+char *fgets(char *
restrict s, int n, FILE *restrict
f)
{
char *p = s;
unsigned char *z;
size_t k;
{
char *p = s;
unsigned char *z;
size_t k;
+ int c;
- if (!n--) return 0;
+ if (n--<=1) {
+ if (n) return 0;
+ *s = 0;
+ return s;
+ }
FLOCK(f);
FLOCK(f);
- while (n
&& !feof(f)
) {
+ while (n) {
z = memchr(f->rpos, '\n', f->rend - f->rpos);
k = z ? z - f->rpos + 1 : f->rend - f->rpos;
k = MIN(k, n);
z = memchr(f->rpos, '\n', f->rend - f->rpos);
k = z ? z - f->rpos + 1 : f->rend - f->rpos;
k = MIN(k, n);
@@
-20,15
+26,19
@@
char *fgets(char *s, int n, FILE *f)
f->rpos += k;
p += k;
n -= k;
f->rpos += k;
p += k;
n -= k;
- if (z) break;
- __underflow(f);
+ if (z || !n) break;
+ if ((c = getc_unlocked(f)) < 0) {
+ if (p==s || !feof(f)) s = 0;
+ break;
+ }
+ n--;
+ if ((*p++ = c) == '\n') break;
}
*p = 0;
}
*p = 0;
- if (ferror(f)) p = s;
FUNLOCK(f);
FUNLOCK(f);
- return
(p == s) ? 0 :
s;
+ return s;
}
weak_alias(fgets, fgets_unlocked);
}
weak_alias(fgets, fgets_unlocked);