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resolve: treat some icmp errors as disconnected 

Fixes #9773.
This commit is contained in:
Yu Watanabe 2018-08-02 15:36:32 +09:00 committed by Zbigniew Jędrzejewski-Szmek
parent 72938b9309
commit 68c597e9e4
1 changed files with 6 additions and 2 deletions
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8
src/basic/fd-util.h
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@ -78,8 +78,12 @@ int acquire_data_fd(const void *data, size_t size, unsigned flags);
int fd_duplicate_data_fd(int fd);
/* Hint: ENETUNREACH happens if we try to connect to "non-existing" special IP addresses, such as ::5 */
#define ERRNO_IS_DISCONNECT(r) \
IN_SET(r, ENOTCONN, ECONNRESET, ECONNREFUSED, ECONNABORTED, EPIPE, ENETUNREACH)
/* The kernel sends e.g., EHOSTUNREACH or ENONET to userspace in some ICMP error cases.
* See the icmp_err_convert[] in net/ipv4/icmp.c in the kernel sources */
#define ERRNO_IS_DISCONNECT(r) \
IN_SET(r, \
ENOTCONN, ECONNRESET, ECONNREFUSED, ECONNABORTED, EPIPE, \
ENETUNREACH, EHOSTUNREACH, ENOPROTOOPT, EHOSTDOWN, ENONET)
/* Resource exhaustion, could be our fault or general system trouble */
#define ERRNO_IS_RESOURCE(r) \