diff options
Diffstat (limited to 'mdk-stage1/dietlibc/libugly/getprotoent_r.c')
-rw-r--r-- | mdk-stage1/dietlibc/libugly/getprotoent_r.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libugly/getprotoent_r.c b/mdk-stage1/dietlibc/libugly/getprotoent_r.c new file mode 100644 index 000000000..aa9af79c3 --- /dev/null +++ b/mdk-stage1/dietlibc/libugly/getprotoent_r.c @@ -0,0 +1,78 @@ +#include <string.h> +#include <sys/types.h> +#include <sys/mman.h> +#include <netdb.h> +#include <ctype.h> +#include "parselib.h" + +static struct state __ps; + +void setprotoent(int stayopen) { + (void)stayopen; + __prepare_parse(_PATH_PROTOCOLS,&__ps); +} + +void endprotoent(void) { + __end_parse(&__ps); +} + +#define ALIASES 16 + +/* "igmp 2 IGMP # internet group management protocol" */ +int getprotoent_r(struct protoent *res, char *buf, size_t buflen, + struct protoent **res_sig) { + size_t i,j,n,g; + unsigned long l; + if (!__ps.buffirst) setprotoent(0); + if (!__ps.buffirst) goto error; + if (__ps.cur>=__ps.buflen) goto error; + res->p_aliases=(char**)buf; +/* getprotoent */ +again: + n=ALIASES*sizeof(char*); g=0; + for (i=0; i<3; ++i) { + char found; + __ps.cur+=__parse_ws(&__ps); + if (__ps.cur>=__ps.buflen) { if (i==2) break; else goto error; } + j=__parse_nws(&__ps); + if (!isblank(found=__ps.buffirst[__ps.cur+j])) { + if (i==2) break; /* it's ok, no (more) aliases necessary */ +parseerror: + while (__ps.cur+j<__ps.buflen) { + if (__ps.buffirst[__ps.cur+j]=='\n') { + __ps.cur+=j+1; + goto again; + } + ++j; + } + } + switch (i) { + case 0: + res->p_name=buf+n; +copy: + if ((size_t)buflen<=n+j) goto error; + memcpy(buf+n,__ps.buffirst+__ps.cur,j); + buf[n+j]=0; + n+=j+1; + if ((found=='\n' || found=='#') && i==1) i=3; + break; + case 1: + if (scan_ulong(__ps.buffirst+__ps.cur,&l)!=j) goto parseerror; + res->p_proto=l; + break; + case 2: + res->p_aliases[g]=buf+n; + ++g; + if (g==(ALIASES-1)) break; + --i; /* again */ + goto copy; + } + __ps.cur+=j+1; + } + res->p_aliases[g]=0; + *res_sig=res; + return 0; +error: + *res_sig=0;/* the glibc people should be taken behind the barn and shot */ + return -1; +} |