diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/dirent/posix_getdents.c | 11 | ||||
| -rw-r--r-- | src/legacy/getusershell.c | 6 | ||||
| -rw-r--r-- | src/linux/renameat2.c | 11 | ||||
| -rw-r--r-- | src/network/inet_ntop.c | 7 | ||||
| -rw-r--r-- | src/signal/siglongjmp.c | 5 |
5 files changed, 37 insertions, 3 deletions
diff --git a/src/dirent/posix_getdents.c b/src/dirent/posix_getdents.c new file mode 100644 index 00000000..26c16ac6 --- /dev/null +++ b/src/dirent/posix_getdents.c @@ -0,0 +1,11 @@ +#include <dirent.h> +#include <limits.h> +#include <errno.h> +#include "syscall.h" + +ssize_t posix_getdents(int fd, void *buf, size_t len, int flags) +{ + if (flags) return __syscall_ret(-EOPNOTSUPP); + if (len>INT_MAX) len = INT_MAX; + return syscall(SYS_getdents, fd, buf, len); +} diff --git a/src/legacy/getusershell.c b/src/legacy/getusershell.c index 5fecdec2..1c5d98ec 100644 --- a/src/legacy/getusershell.c +++ b/src/legacy/getusershell.c @@ -25,8 +25,10 @@ char *getusershell(void) ssize_t l; if (!f) setusershell(); if (!f) return 0; - l = getline(&line, &linesize, f); - if (l <= 0) return 0; + do { + l = getline(&line, &linesize, f); + if (l <= 0) return 0; + } while (line[0] == '#' || line[0] == '\n'); if (line[l-1]=='\n') line[l-1]=0; return line; } diff --git a/src/linux/renameat2.c b/src/linux/renameat2.c new file mode 100644 index 00000000..b8060388 --- /dev/null +++ b/src/linux/renameat2.c @@ -0,0 +1,11 @@ +#define _GNU_SOURCE +#include <stdio.h> +#include "syscall.h" + +int renameat2(int oldfd, const char *old, int newfd, const char *new, unsigned flags) +{ +#ifdef SYS_renameat + if (!flags) return syscall(SYS_renameat, oldfd, old, newfd, new); +#endif + return syscall(SYS_renameat2, oldfd, old, newfd, new, flags); +} diff --git a/src/network/inet_ntop.c b/src/network/inet_ntop.c index 4bfef2c5..f442f47d 100644 --- a/src/network/inet_ntop.c +++ b/src/network/inet_ntop.c @@ -34,7 +34,12 @@ const char *inet_ntop(int af, const void *restrict a0, char *restrict s, socklen for (i=best=0, max=2; buf[i]; i++) { if (i && buf[i] != ':') continue; j = strspn(buf+i, ":0"); - if (j>max) best=i, max=j; + /* The leading sequence of zeros (best==0) is + * disadvantaged compared to sequences elsewhere + * as it doesn't have a leading colon. One extra + * character is required for another sequence to + * beat it fairly. */ + if (j>max+(best==0)) best=i, max=j; } if (max>3) { buf[best] = buf[best+1] = ':'; diff --git a/src/signal/siglongjmp.c b/src/signal/siglongjmp.c index bc317acc..53789b23 100644 --- a/src/signal/siglongjmp.c +++ b/src/signal/siglongjmp.c @@ -5,5 +5,10 @@ _Noreturn void siglongjmp(sigjmp_buf buf, int ret) { + /* If sigsetjmp was called with nonzero savemask flag, the address + * longjmp will return to is inside of sigsetjmp. The signal mask + * will then be restored in the returned-to context instead of here, + * which matters if the context we are returning from may not have + * sufficient stack space for signal delivery. */ longjmp(buf, ret); } |