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kern: cleanup procread for Qnote

This commit is contained in:
Giacomo Tesio 2017-10-23 03:11:22 +02:00
parent 70d5961022
commit c17d5bdb18
1 changed files with 6 additions and 8 deletions
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14
sys/src/kern/port/devproc.c
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@ -899,17 +899,15 @@ procread(Chan *c, void *va, long n, int64_t off)
n = 0; n = 0;
else { else {
i = jehanne_strlen(p->note[0].msg) + 1; i = jehanne_strlen(p->note[0].msg) + 1;
if(i > n) if(i < n)
i = n; n = i;
rptr = va; rptr = va;
jehanne_memmove(rptr, p->note[0].msg, i); jehanne_memmove(rptr, p->note[0].msg, n);
rptr[i-1] = '\0'; rptr[n-1] = '\0';
p->nnote--; if(--p->nnote == 0)
p->notepending = 0;
jehanne_memmove(p->note, p->note+1, p->nnote*sizeof(Note)); jehanne_memmove(p->note, p->note+1, p->nnote*sizeof(Note));
n = i;
} }
if(p->nnote == 0)
p->notepending = 0;
poperror(); poperror();
qunlock(&p->debug); qunlock(&p->debug);
psdecref(p); psdecref(p);