tree-wide: increase granularity of percent specifications all over the place to permille

We so far had various placed we'd parse percentages with
parse_percent(). Let's make them use parse_permille() instead, which is
downward compatible (as it also parses percent values), and increases
the granularity a bit. Given that on the wire we usually normalize
relative specifications to something like UINT32_MAX anyway changing
from base-100 to base-1000 calculations can be done easily without
breaking compat.

This commit doesn't document this change in the man pages. While
allowing more precise specifcations permille is not as commonly
understood as perent I guess, hence let's keep this out of the docs for
now.

diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index 89b7bd8d096fba1368cca50e6ced673087033432..908d16c9f26e1c7bfb7498b55bffc39f18fe90e5 100644 (file)
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -3013,13 +3013,13 @@ int config_parse_cpu_quota(
                 return 0;
         }
 
-        r = parse_percent_unbounded(rvalue);
+        r = parse_permille_unbounded(rvalue);
         if (r <= 0) {
                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid CPU quota '%s', ignoring.", rvalue);
                 return 0;
         }
 
-        c->cpu_quota_per_sec_usec = ((usec_t) r * USEC_PER_SEC) / 100U;
+        c->cpu_quota_per_sec_usec = ((usec_t) r * USEC_PER_SEC) / 1000U;
         return 0;
 }
 
@@ -3041,7 +3041,7 @@ int config_parse_memory_limit(
 
         if (!isempty(rvalue) && !streq(rvalue, "infinity")) {
 
-                r = parse_percent(rvalue);
+                r = parse_permille(rvalue);
                 if (r < 0) {
                         r = parse_size(rvalue, 1024, &bytes);
                         if (r < 0) {
@@ -3049,7 +3049,7 @@ int config_parse_memory_limit(
                                 return 0;
                         }
                 } else
-                        bytes = physical_memory_scale(r, 100U);
+                        bytes = physical_memory_scale(r, 1000U);
 
                 if (bytes >= UINT64_MAX ||
                     (bytes <= 0 && !streq(lvalue, "MemorySwapMax"))) {
@@ -3102,7 +3102,7 @@ int config_parse_tasks_max(
                 return 0;
         }
 
-        r = parse_percent(rvalue);
+        r = parse_permille(rvalue);
         if (r < 0) {
                 r = safe_atou64(rvalue, &v);
                 if (r < 0) {
@@ -3110,7 +3110,7 @@ int config_parse_tasks_max(
                         return 0;
                 }
         } else
-                v = system_tasks_max_scale(r, 100U);
+                v = system_tasks_max_scale(r, 1000U);
 
         if (v <= 0 || v >= UINT64_MAX) {
                 log_syntax(unit, LOG_ERR, filename, line, 0, "Maximum tasks value '%s' out of range, ignoring.", rvalue);

diff --git a/src/login/logind-user.c b/src/login/logind-user.c
index e18a6f0efeb42082bfe431d36613596dc0f237bc..346f792fb8c748bb451f17e84a119939dbe28e51 100644 (file)
--- a/src/login/logind-user.c
+++ b/src/login/logind-user.c
@@ -711,9 +711,9 @@ int config_parse_tmpfs_size(
         assert(data);
 
         /* First, try to parse as percentage */
-        r = parse_percent(rvalue);
-        if (r > 0 && r < 100)
-                *sz = physical_memory_scale(r, 100U);
+        r = parse_permille(rvalue);
+        if (r > 0 && r < 1000)
+                *sz = physical_memory_scale(r, 1000U);
         else {
                 uint64_t k;
 

diff --git a/src/login/pam_systemd.c b/src/login/pam_systemd.c
index 7037c13cd8ace86a9c793b978fef61586267292d..cb1b47e41d021d8c30223d090ac31e59a6cb7bd9 100644 (file)
--- a/src/login/pam_systemd.c
+++ b/src/login/pam_systemd.c
@@ -208,9 +208,9 @@ static int append_session_memory_max(pam_handle_t *handle, sd_bus_message *m, co
                         return r;
                 }
         } else {
-                r = parse_percent(limit);
+                r = parse_permille(limit);
                 if (r >= 0) {
-                        r = sd_bus_message_append(m, "(sv)", "MemoryMaxScale", "u", (uint32_t) (((uint64_t) UINT32_MAX * r) / 100U));
+                        r = sd_bus_message_append(m, "(sv)", "MemoryMaxScale", "u", (uint32_t) (((uint64_t) r * UINT32_MAX) / 1000U));
                         if (r < 0) {
                                 pam_syslog(handle, LOG_ERR, "Failed to append to bus message: %s", strerror(-r));
                                 return r;

diff --git a/src/shared/bus-unit-util.c b/src/shared/bus-unit-util.c
index 8f90f2c31ae7d41ccaa88b6119dd18dc43d154dc..c607b5319b28111f2b63aaefbcc9d0a3ad9b00ea 100644 (file)
--- a/src/shared/bus-unit-util.c
+++ b/src/shared/bus-unit-util.c
@@ -422,16 +422,16 @@ static int bus_append_cgroup_property(sd_bus_message *m, const char *field, cons
                         return 1;
                 }
 
-                r = parse_percent(eq);
+                r = parse_permille(eq);
                 if (r >= 0) {
                         char *n;
 
-                        /* When this is a percentage we'll convert this into a relative value in the range
-                         * 0…UINT32_MAX and pass it in the MemoryLowScale property (and related
-                         * ones). This way the physical memory size can be determined server-side */
+                        /* When this is a percentage we'll convert this into a relative value in the range 0…UINT32_MAX
+                         * and pass it in the MemoryLowScale property (and related ones). This way the physical memory
+                         * size can be determined server-side. */
 
                         n = strjoina(field, "Scale");
-                        r = sd_bus_message_append(m, "(sv)", n, "u", (uint32_t) (((uint64_t) UINT32_MAX * r) / 100U));
+                        r = sd_bus_message_append(m, "(sv)", n, "u", (uint32_t) (((uint64_t) r * UINT32_MAX) / 1000U));
                         if (r < 0)
                                 return bus_log_create_error(r);
 
@@ -449,13 +449,15 @@ static int bus_append_cgroup_property(sd_bus_message *m, const char *field, cons
                 if (isempty(eq))
                         r = sd_bus_message_append(m, "(sv)", "CPUQuotaPerSecUSec", "t", USEC_INFINITY);
                 else {
-                        r = parse_percent_unbounded(eq);
-                        if (r <= 0) {
-                                log_error_errno(r, "CPU quota '%s' invalid.", eq);
-                                return -EINVAL;
+                        r = parse_permille_unbounded(eq);
+                        if (r == 0) {
+                                log_error("CPU quota too small.");
+                                return -ERANGE;
                         }
+                        if (r < 0)
+                                return log_error_errno(r, "CPU quota '%s' invalid.", eq);
 
-                        r = sd_bus_message_append(m, "(sv)", "CPUQuotaPerSecUSec", "t", (usec_t) r * USEC_PER_SEC / 100U);
+                        r = sd_bus_message_append(m, "(sv)", "CPUQuotaPerSecUSec", "t", (((uint64_t) r * USEC_PER_SEC) / 1000U));
                 }
 
                 if (r < 0)